http://www.ohgizmo.com/2010/01/09/ce...ity-from-wifi/

I thought this might appeal to some of you. Just imagine, you're camping in the yard of some home, church, or business and are able to charge your cellphone from the surrounding wifi signals (whether the signal is encrypted or not!) without having to go inside and ask for an outlet. It's such an innovative idea, I'm sure it could come in handy often!