Note (September 2026): This list has seven gadgets, not six. Evapolar is a personal evaporative cooler rather than a portable air conditioner, and a Wi-Fi extender improves coverage but does not raise your internet speed; both points are corrected below.
Cool tech gadgets to buy online in this list are a cell phone signal booster, a Wi-Fi signal booster, the Evapolar personal evaporative cooler, the Cubii Pro under-desk elliptical, the WaterLily turbine charger, the ZUtA pocket printer and Sugru mouldable glue. As of September 2026, Evapolar, Cubii and Sugru are still sold, the Cubii Pro is on a last-call sale, and WaterLily and ZUtA are hard to find.
Key Takeaways
- Signal boosters are useful but regulated: in the US, the FCC requires you to register a consumer cell booster with your wireless provider and to switch it off if it causes interference.
- A Wi-Fi extender fills coverage gaps, but a repeater on the same channel cuts wireless throughput by at least 50%, so it does not make your internet plan faster.
- Evapolar sells evaporative coolers (evaCHILL, evaLIGHT plus, evaSMART), which work best in dry air and are not air conditioners.
- Sugru is now sold as Sugru by tesa and cures into silicone rubber in 12-24 hours.
- Before buying any gadget online, confirm the exact model is still made, check the maker’s own site for specs and compare prices, because prices change often.
Many of us roam the internet constantly in search of cool gadgets, and we are rarely disappointed. It is truly full of them! Any kind you like. New, inventive, and exciting.
Best Tech Gadgets to Buy Online
Life and technology take giant leaps and it’s our job to keep up with them. So if you, like many others prefer to stay at home these days rather than go to an actual store, here are 7 cool gadgets you can find online, with notes on which ones are still sold under the same name as of September 2026.
Cell phone signal booster
This device is not exactly new, but it’s unbelievably useful in case you have bad reception at home or at the office. A cell phone signal booster (also called a cellular repeater) picks up an existing outdoor signal, amplifies it and rebroadcasts it indoors, which can mean fewer dropped calls and more reliable mobile data. It cannot create a signal where there is none outside. A cell phone signal booster is fairly simple in its construction.
There are 3 main components to it: The outside antenna ( an omni or yagi), the amplifier itself, and the indoor antenna. These components are interconnected with coaxial cables, and once you hook it up correctly, you will notice an increased signal straight away.
There are different boosters out there, depending on the signal you want to amplify, the coverage, and your provider. So do some research before you decide to purchase one and don’t be shy to ask for advice!
Wifi Signal Booster
These days it is very important to have a reliable internet connection at your house. Whether you’re working or just surfing the web, you want to have a fast connection that won’t give you any trouble no matter what you do.
And with all of your family members using the wifi router almost all the time, you are going to need something that will improve your browsing experience.
A wifi signal booster extends Wi-Fi coverage to rooms your router does not reach well, so family members in far corners of the house can stay connected. It does not raise the speed of your internet plan: according to Wikipedia’s article on wireless repeaters, a repeater that receives and retransmits on the same channel reduces wireless throughput by at least 50%. If weak coverage rather than a slow plan is the problem, compare an extender with a mesh Wi-Fi system before you buy.
Evapolar
If you don’t live alone, you are definitely familiar with the following situation: your roommate/spouse/sibling cranks up the AC because they are constantly uncomfortable with the temperature that’s comfortable for you. The AC can be a battleground, but it doesn’t have to be.
Evapolar, a maker of personal evaporative coolers, offers one way out. Its devices, such as the evaCHILL, evaLIGHT plus and evaSMART, are not air conditioners: they cool a small zone around you by evaporating water. It’s energy-conserving and eco-friendly. You only have to keep an eye on the water level in the tank. It’s noiseless and doesn’t vibrate, so you can plug it in wherever you are and feel comfortable.
CubiiPro
This clever little device is an elliptical machine that you can use under your desk or pretty much anywhere you like. The Cubii Pro connects to the Cubii mobile app via Bluetooth, and Cubii says your progress can sync with Apple Watch, Fitbit and Apple HealthKit. It has 8 adjustable resistance levels. Its main appeal is that it lets you keep your legs moving while you sit.
Cubii markets the machine as low-impact exercise for people who have little time for the gym. It is not a medical device, so anyone with circulation problems should ask a doctor before relying on it. Use it while at your desk at work or at home. People with limited mobility may find seated exercise easier to fit in, but should check with a clinician or physiotherapist first.
Waterlily turbine charger
This device takes us back to the basics and it is unbelievably useful for campers. It allows you to charge devices using water power and wind. Place it in the water and the turbine will generate energy from the stream of the river. The same goes for wind.
Even if there is no water flow or wind at the moment, WaterLily lists a hand crank for emergency charging, so you can produce some energy manually to top up your phone for a call for help. Great for long hikes and any extreme conditions you may find yourself in!
Zuta Pocket printer
This great little device is so useful during business trips! If you are in another city or country and you have to print a document ASAP, usually you have to scramble to find one quickly enough. But this device will help you stay on top of your game.
Zuta is a pocket-sized robotic printer from ZUtA Labs that rolls across a sheet of paper and prints from your phone. It will print wherever you are. All you need is some paper and a firm surface.
Sugru Moldable glue
This is not a gadget strictly speaking, but so much fun to experiment with! It looks like a piece of modeling clay and, according to tesa, sticks permanently to glass, ceramic, wood, metal and many plastics, though not to oily plastics such as polypropylene, polyethylene or Teflon. There are endless possibilities of use, just think about it!
If your favorite sneakers started leaking, no problem! You can press a piece of Sugru onto the worn spot and keep wearing them longer. Or if you want to hang something in the bathroom without damaging the tiles! According to tesa, which now owns the brand, Sugru is waterproof once cured; it turns into silicone rubber in 12-24 hours, and tesa advises allowing up to 48 hours for load-bearing jobs such as hooks.
You can repair devices, stick hooks to the wall, and generally revive broken cords and cables, along with anything else. We all know how quickly they can break.
There are so many more cool things you can get online, with new ones coming out all the time. Innovation is endless, so you can expect new and exciting gadgets every year! Keep your finger on the pulse and don’t miss out on all the great stuff happening online.
Which of These Gadgets Are Still Sold?
Gadget lists age quickly. The table below shows what each maker’s own website said when checked in September 2026. Prices change often, so treat every figure as a guide and check the current price before you buy.
| Gadget | What it is | Status as of September 2026 | Price guide |
|---|---|---|---|
| Cell phone signal booster | Outdoor antenna, amplifier and indoor antenna linked by coaxial cable | A product category, widely sold; US users must register it with their carrier | Varies by coverage area and brand |
| Wi-Fi signal booster (extender) | Repeater that rebroadcasts your router’s Wi-Fi | A product category, widely sold | Varies by brand and Wi-Fi standard |
| Evapolar | Personal evaporative cooler | Sold: evaCHILL, evaLIGHT plus, evaSMART and evaPURE | About $59-$168 on sale on Evapolar’s US store, regular prices up to $280 (prices change) |
| Cubii Pro | Bluetooth under-desk elliptical | Cubii’s Cubii Pro page shows a “Last Call Sale”; the homepage now features Cubii Total Body, Cubii Go and Cubii Move | No price on Cubii’s site, which sends buyers to Amazon; prices vary |
| WaterLily | Portable water turbine charger | Maker’s online shop was password-protected when checked | Could not be verified |
| ZUtA pocket printer | Robotic printer that rolls over the page | No current sale could be verified; the maker’s site returned an access error | Could not be verified |
| Sugru | Mouldable glue that cures to silicone rubber | Sold as Sugru by tesa | No price on tesa’s page; varies by retailer |
What Changed Since This List Was First Published?
Evapolar now sells a range of evaporative coolers
Evapolar’s current range includes the evaCHILL, evaLIGHT plus, evaSMART and evaPURE, plus cartridges and accessories. Evapolar says its coolers use a volcanic material and lower the temperature of the outgoing air by 14°C (25°F). As of September 2026 its US store listed the evaCHILL at $72, the evaLIGHT plus at $108 and the evaSMART at $168 during an end-of-season sale, against regular prices of $120, $180 and $280. Prices change, so check before buying.
The Cubii Pro is on a last-call sale
Cubii’s product page for the Cubii Pro carries a “Last Call Sale” banner, which suggests the model is being phased out, although the page does not say so outright. Cubii’s homepage now leads with the Cubii Total Body, Cubii Go and Cubii Move, and it sends buyers to Amazon rather than selling directly. If you want a Bluetooth model with app tracking, check which newer Cubii model has the features you need.
WaterLily is made in Canada but hard to buy directly
WaterLily is designed and manufactured in Canada by Seaformatics Systems Inc. The maker says it produces up to 15 watts when anchored in a river while camping, 2-3 watts when towed behind a paddled boat, and up to 360 watt-hours a day. It charges USB and 12V devices, including phones, GPS units, GoPros, LED lights and battery banks. When checked in September 2026, the maker’s online shop was password-protected, so availability may depend on third-party sellers.
The ZUtA printer had a troubled launch
ZUtA Labs raised more than $511,000 on Kickstarter for its mini mobile robotic printer. In October 2016, chief executive Tuvia Elbaum said shipping had been pushed back several times and was planned for early 2017, with a first batch of 2,400 units for backers and pre-orders. TechCrunch reported in July 2016 that it printed in black and white only, had about one hour of battery life and was planned to retail at $299, with a $199 backer price. This article could not verify that the printer is on sale in September 2026, so check a seller’s return policy carefully if you find one.
Sugru now belongs to tesa
Sugru is now sold as Sugru by tesa, a Beiersdorf company. According to tesa, you have about 30 minutes to shape it before it starts to set, it cures into a durable silicone rubber in 12-24 hours, and it is waterproof and heat and cold resistant once cured.
Are Cell Phone Signal Boosters Legal?
Cell phone signal boosters are legal in the United States if you follow the FCC’s rules. According to Verizon’s summary of the rules the FCC adopted on February 20, 2013, you must get carrier approval before operating a signal booster and register it with your service provider; registering fulfils both requirements. The rules also prohibit boosters from causing interference to wireless networks, and if the FCC or your provider contacts you about interference, you must shut the booster down until the problem is fixed.
According to Wikipedia’s article on cellular repeaters, the FCC’s 2013 rules created two categories of compliant boosters: broadband boosters limited to 65-72 dB of gain, and carrier-specific boosters allowed up to 100 dB, with the rules taking effect on March 1, 2014. Outside the US, check your national telecoms regulator’s rules before buying, because some countries restrict or ban consumer boosters.
Wi-Fi Extender or Mesh Wi-Fi: Which Should You Buy?
A Wi-Fi extender is the cheapest fix for one dead spot, but it halves or worsens throughput when it repeats on the same channel, and Wikipedia notes that the quality of a connection to an extender is generally worse than a connection to the main access point. A mesh Wi-Fi system uses several nodes that work as one network; according to Wikipedia, router makers began offering mesh routers for home use in the mid-2010s.
- Choose an extender if one room has weak Wi-Fi and you mainly browse, message or stream at modest quality.
- Choose mesh Wi-Fi if several rooms or floors have weak coverage and you want one network name throughout the home.
- Use a cable for a desktop PC, games console or smart TV near the router; our guide to Wi-Fi vs Ethernet speed explains why.
- Replace the router if it is several years old; see our roundup of the best Wi-Fi 6, 6E and 7 routers.
Evaporative Cooler vs Air Conditioner
An evaporative cooler such as an Evapolar unit cools air by evaporating water, while an air conditioner uses a vapor-compression refrigeration cycle with a compressor. According to Wikipedia’s article on evaporative coolers, their cooling capacity is greatest in arid climates and falls as humidity rises, and they add moisture to the air instead of removing it.
| Feature | Evaporative cooler | Air conditioner |
|---|---|---|
| How it cools | Evaporates water | Refrigerant and compressor |
| Works best | Dry climates | Any climate, including humid |
| Humidity | Adds moisture | Removes moisture |
| Upkeep | Refill water, replace cartridges | Clean filters, occasional servicing |
How to Buy Gadgets Online Safely
- Confirm the exact model still exists. Check the maker’s own website, because older listings can outlive the product.
- Read the specifications, not the slogans. Look for measurable figures such as watts, coverage area or supported networks.
- Check the rules. Cell boosters need carrier registration in the US, and some gadgets are restricted in other countries.
- Compare prices and return policies. Prices change often, and a clear return window matters for niche or crowdfunded products.
- Protect what you buy. For expensive devices, read our guide to the dos and don’ts of gadget insurance.
If you are equipping a workspace, our list of essentials to smarten up your home office pairs well with an under-desk elliptical, and campers weighing a WaterLily can start with our camping essentials checklist.
Frequently Asked Questions
Do I need to register a cell phone signal booster?
Yes, in the United States. Under FCC rules adopted in 2013, you must get your wireless provider’s approval and register the booster with it before use, and you must shut the booster down if it causes interference.
Does a Wi-Fi booster make my internet faster?
No. A Wi-Fi booster or extender improves coverage in weak spots but cannot exceed the speed of your internet plan, and a repeater on the same channel reduces wireless throughput by at least 50%.
Is Evapolar an air conditioner?
No. Evapolar makes personal evaporative coolers that cool a small zone by evaporating water. They work best in dry air and add humidity, unlike an air conditioner.
Is the Cubii Pro still available?
As of September 2026, Cubii’s Cubii Pro page shows a “Last Call Sale”, and the homepage features the Cubii Total Body, Cubii Go and Cubii Move. Cubii sends buyers to Amazon, so stock and prices vary.
How long does Sugru take to cure?
According to tesa, Sugru cures into silicone rubber in 12-24 hours, and tesa advises allowing up to 48 hours before hanging anything heavy on it.
