Self Charging Flashlights!?
Well kinda, this is one of those great "on paper" ideas that apparently did not work out here. If you haven't heard of them, they work similar to battery-less watches (that are very expensive). The unit gets charged through kenetic energy: When the light is shaken, a super magnet passes through a coil generating a small (apparently too small) electrical charge. The Gadgeteer
's review of one of these charge-by-shaking torches
can be summed up pretty easily "mucho effort, no pay-off".