Solar energy undoubtedly is one of the best eco-friendly discoveries in the world. The XD Design solar window charger uses the solar energy to the optimum level. This window charger can be attached to the window easily and it comes with a small as well.
a simple do-it-yourself solar USB charger that fits cozily in an Altoid tin! The DIY project will charge most mobile devices via USB using 2 rechargeable AA batteries and flexible thin-film solar panels. Read to learn what you need to build your own!
Levin Solstar – Solar Panel Charger – Aside from this small, lightweight solar cell being water-resistant and Dirt/Shockproof, it also has two built in USB ports. That means simultaneous charging of two separate devices at a time.
Altoids charger For less than twenty bucks, you can make a portable battery pack for your laptop. (Mine has to be charged every two hours because I run it unmercifully.) Great article for other Altoid tin uses from Mother Earth.
The Hand Crank Emergency Cell Phone Charger - Hammacher Schlemmer - This is the charger that converts one minute of hand cranking into bursts of emergency power for a connected cell phone. For emergency calls. This would be awesome!