Essential Gear Mini Solar USB Charger - SO-200
This little thing is a great idea. A tiny, under 2oz solar
charger that can charge cell phones or mp3 players in a pinch. It can
also be charged via USB. Perfect for the traveling person. If it
actually worked. Mine has never taken a solar charge, even after a week
in bright California sunlight. I was never able to get a response from
the maker of the unit. I'd give it 10/10 for the idea and 1/10 for
actual use, since it doesn't actually work.