A new device called the onE Puck can charge your phone with a beverage. The onE Puck taps into heat transfer from an object to create a current that can power a USB connected device. The charger doesn't need a hot object, either. The device features a red side for hot objects, like a mug of coffee, and a blue side for cold ones, like a pint of beer. Any hot or cold object could be used, not necessarily just beverages, but the onE Puck's coaster-shaped design certainly lends itself to cups.

Epiphany Labs has built a prototype and is currently funding through Kickstarter. An pledge of $99 gets you a onE Puck an $135 will get you a custom engraved one. When the company begins selling the device, they're expected to retail for $150, according to Engadget.