Another entry in the cook-and-charge category is the PowerPot, a lightweight thermoelectric generator that converts heat into DC electrical power. You just add water to the pot and place it on a heat source and it will charge your gadgets. The PowerPot is equipped with a standard USB port and three feet of heavy-duty, flame-resistant wire so it can safely go over the campfire or stove. In addition to charging, it can also run speakers, lights, fans, or other low-power USB appliances. The PowerPot goes for $149.