Duracell's Mobile Charger not only has a USB port so you can power your iPods and Zunes, but there's even a slot to put AA/AAA batteries into so you can charge them via wall or car outlet. Those AA batteries work the same way in reverse as well—you use them to charge any USB gadgets you plug in. The charger comes for $24.99, which could be worth it as an emergency phone/music charger that you can use while you're out or in the car. [Earth Times via Electronista]
I can't find anything on it from the Duracell website, and the picture there looks like a cropped version of a picture from this blog ([jkontherun.blogs.com]), that shows the Mobile Mini, which has a rechargeable pack (not AA or AAA), and the full size USB-port as well. No idea if both full and mini USB ports will be on the Mobile Charger, but that would be ideal. Why couldn't you use AAA batteries to recharge devices?.