The BioLiteCampStove (and its larger sibling, the HomeStove) were originally designed to replace less efficient and dangerous open fires in developing countries. That said, the CampStove could easily find a place in your camping (or earthquake preparedness) kit this Summer. It could be just what you need to keep your phone charged and communicating when you need it most.
Available for pre-order at $129, the CampStove not only cooks your food and boils your water, it can also power your USB gadgets like smartphones and LED lights. Even better, it does this using small sticks, pinecones, pellets or other biomass, not large amounts of firewood. The wood is continuously fed into the stove and a thermoelectric generator turns a small fan to aid in complete and efficient combustion of the materials. The excess energy is then available to use for your technology.