Do you need power for your cell phone, MP3 player, digital camera, and other portable gadgets? Our friend Mr. Sun has an endless supply (well, not endless--5 billion years and kaput!). What you need is a way to harness those rays and turn them into energy you can use.
GoldenGadgets has just such a harness: the Portable Hybrid Solar Charger, currently on sale for $19.99--shipping will run you about $5.
What makes it a "hybrid" charger? Simple: It can draw energy from the sun (8-10 hours buys you a full charge--bad news for those of us who live in Michigan, where we're lucky to get 8-10 minutes of sun. Hey-oh!) or from a USB source like your PC, which does the job in about 4 hours.
The charger comes with a generous assortment of tips: BlackBerry, Motorola, Nokia, Mini-USB, USB, and iPod/iPhone. (Unless my eyes deceive me, there's also one for Palm, though the product listing doesn't mention it.)
Speaking of which, the product listing doesn't specifically mention iPhone 3G compatibility, either; however, one of the user reviews claims it works fine. (The demo video up top shows an iPhone getting charged, but it looks like a first-generation model.)
Sure, you can, but that powers one device and one device only. This eco-friendly charger can juice just about everything in your carry-on bag. Until someone invents a teeny little windmill, it'll have to do.