nPower® PEG (Personal Energy Generator) : Recharge your hand-held electronic devices with the kinetic energy you generate while moving around! via crispgreen http://www.npowerpeg.com/ #npowerpeg #Battery_Charger
Great for camping, and travel in general - goTenna | No service, no problem. goTenna pairs wirelessly with your smartphone, enabling you to text with anyone who has the device even if you don't have service. No towers, routers or satellites required!