I ran across a cool little solar charger for cell phones and MP3 players at CES. It is built into the mold of a Motorola RAZR. It is very cool for two reasons: 1) it has an on board battery so it can charge itself and then later charge your phone or iPod. 2) The price is about half of what the Solio costs (I blogged about the Solio recently, I still think it's a great product but this new unit seems to be a better alternative.)
I am working on having my import company, MotherBoard LLC, distribute these things.