|The BioLite KettleCharge($150) uses the water you boil to produce electricity. It works on a wide range of stoves and serves as a perfect personal-scale generator for your everyday devices. Just fill, heat, charge.
KettleCharge uses a thermoelectric generator to provide power to pretty much whatever you decide to plug into the kettle's on-board USB port. As you bring the water to a boil, electricity is produced and sent to the Power Handle, leaving you with potable water and 10W of usable power. In other words, this thing can even charge a tablet.