Being of the 24-hour room-service ilk, we don't exactly find that building a solar iPod charger is our idea of a good time. Especially when you can already buy products like this. But hey, that's just us.
The rugged DIY individuals out there might be interested in taking a shot at this homemade charger posted on Yosemite Outside, which includes a solar panel that can be affixed to a backpack. We have no doubt that it works, but the duct tape probably won't win any design awards.
(Photo: Yosemite Outside)