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This BioLite CampStove is $129. It is different from regular camping stoves because it has a USB port to charge your gadgets. The CampStove has a thermoelectric element, a battery, a fan, and a microprocessor. When you burn wood in the chamber, a copper probe transfers heat to one side of the element, while on the other side cool air provides a differential that enables ions to jump sides and generate electricity. So you can use the leftover energy from the cooking to charge your electronics! I think this is a cool idea, but hopefully it would only be used to charge a phone in the case of an emergency. The fun of camping is to get away from things like electronics and playing with an ipad the whole time instead of exploring the nature around you kind of defeats the purpose of camping!
Image Source: http://www.popsci.com/gadgets/article/2012-09/pop-review-biolite-campstove-cooks-your-food-and-charges-your-gadgets