If you enjoy camping and contemplate taking some electronic devices along for the ride (just in case), the FlameStower Heat-Powered Charger ($90,00) could be a smart addition to your modern survival kit, keeping your gear juiced up every time you light up a fire.
Designed to work with any open flame including cooking stoves, camp fires or emergency candles, the FlameStower is a light (10 oz), rugged and compact charger that will take up little space in your backpack, and provide electricity in case you ever need it. To use it, simply unfold the stand, fill its small reservoir with water and stick its blade into a fire to activate its thermoelectric generator that will power-up your devices at the same rate as your computer’s USB port (2.5 W). While it may take about 2.5 hours to fully charge your smartphone, camera, flashlight, or anything with a USB cord, the FlameStower still is a practical, life-saving solution not just for camping but also in case of storms and power outages. This is a totally sustainable power source, and much more reliable than solar power, because you can use it any time of day or night, and in any weather (assuming you are a skilled outdoorsmen able to light a fire in the rain). via