Does your gadget get power from a USB port? Like say, a smartphone or PDA? Well, thanks to an inventive Iowa State University student, you can get the Power Purse. It's a bag covered with tiny solar cells, and provides power through a built-in USB port tucked away inside. Conceivably, you could be keeping your favorite toy fully charged while walking on a sunny day.

Sounds great, but I suspect Solarjo"'s marketing department is a bit confused (see image above): feminine-looking handbag, carried by sculpted manly arms? Maybe this is all about pride.