This waterproof pen that can write underwater

This rugged Rite In The Rain pen ($32), perfect for outdoor explorers, writes in just about any condition, even through water and mud. And because the ink cartridge is pressurized, this pen writes underwater too.

This toaster that looks like Darth Vader

This Darth Vader Toaster by Pangea Brands ($40) raises the question: Do you need a Star Wars logo burned onto your toast every morning? No, of course not.

But is it really cool to have a Star Wars logo burned onto your toast every morning? Yes. Yes it is.

This hand-powered espresso maker that makes coffee anywhere

Unlike most espresso machines, the clever Wacaco Minipresso ($50) is hand-powered, requiring no electricity.

This adorable, remote-controlled night light

This simple cat nightlight ($17) boasts 16 static colors and four different lighting modes.

This solar-powered charger for all your devices

Perfect for students, backpackers and anyone whose adventures take them far from wall outlets, this Addtop Portable Solar Power Bank ($45) can store up to 25,000 mAh-worth of juice for when you need it most.

This Bluetooth turntable-in-a-suitcase

Get out the vinyl! This three-speed Bluetooth Suitcase Turntable from Victrola ($45) plays your music wirelessly via Bluetooth or on the built-in stereo speakers.

This crazy rugged Bluetooth speaker

Don't let the low price fool you: This 4-star-rated Turtle Shell 2.0 Bluetooth speaker ($47) is IPX-65 water and dust resistant, puts out 96 decibels of sound and offers 16 hours of play time on a single charge.

This emergency flashlight that can charge your phone, too

The RunningSnail Emergency Weather Radio ($20), a solar- and hand-powered device, is a great choice for your home emergency kit or go bag. It even has a 1,000-mAh power bank that can charge your phone.

This Bluetooth speaker that displays pixel art

Sure, the Divoom Aurabox ($40) is a 5-watt Bluetooth speaker. But its key feature it that its companion app allows you to design (or choose from a selection of premade) 10x10-pixel drawings and animations.

This wireless Qi phone charger bargain

Have a new phone that supports Qi wireless charging, but don't have a compatible charger for it? The Anker PowerPort Wireless ($16) will do the trick, though note it doesn't come with an AC adapter -- you'll need to use the one that comes with your phone.

This USB desk fan that provides a gentle breeze

This adjustable pink fan ($20) -- also available in aqua and white -- is a bit of a novelty, but it will help keep you cool at your desk.

This handy device for people who keep losing things

Pair this handy little Bluetooth device with your smartphone, then slip it into your wallet. If you ever misplace your wallet, you can "ring" the water-resistant Tile Slim ($29) and even pull up its last known location on a map.

This travel clock that charges your USB devices

If you're looking for an inexpensive alarm clock with USB ports to take on trips or for guests in your spare bedroom, this 4.5-star-rated clock from Marathon ($25) is a good choice.

This Raspberry Pi kit for making your own retro gaming console

This could be the most fun hobby kit you'll ever buy. With just a little bit of work, you can turn this CanaKit Raspberry Pi 3 Kit ($50) into a retro game console with Bluetooth and Wi-Fi support. Includes a case and 2.5-amp power supply.

This hub that adds USB 3.0 ports to your MacBook Pro

Apple has an unfortunate habit of retiring useful ports, such as the USB 3.0, a bit too early. This color-coordinated QacQoc hub ($43) adds Thunderbolt 3, USB-C, an SD/microSD card reader and a pair of USB 3.0 ports to your MacBook Pro.

This comfy gaming headset that's an Amazon favorite

The HyperX Cloud Stinger ($50) boasts a lightweight design, comfortable memory foam ear cups and on-ear volume controls. It's a great entry-level headset.

This speed sensor for your bike

This easy-to-install Bluetooth Wahoo RPM Sensor ($40) will help you keep accurate tabs on your cycling speed. It's compatible with iOS, Android, bike computers and a number of popular cycling apps.

This 16.4-foot strip of LED lights

With this adhesive-backed, linkable 16.4-foot LED strip from Supernight ($24), you can easily add dramatic mood lighting or game-show-style flair to any room of your home. The included remote lets you choose between 20 colors with dimming and brightness controls.

This inexpensive 10,000-mAh battery pack

Having a spare battery for your phone can sure come in handy. This 10,000-mAh external battery by Poweradd ($18) has enough juice to recharge multiple devices at once.