The Solar ZipCharger Kit is a build-it-yourself solar cell phone or mp3/ipod charger. Any small device that has it’s own rechargeable battery can be powered with the ZipCharger. Two 1.25 watt @ 12vdc (100mA) solar laminates come together in this zippered travel wallet, with an auto socket for charging cellphones. A USB car charger is included to power devices with USB cords.
For more power, consider the 4 cell Solar Notebook Charger Kit, where you’ll make your own notebook from cardboard & duct tape.