If you own an iPod nano, you should know about the DLO nanoTune ($69.99 direct). It's a hard case that has a built-in FM tuner, FM transmitter, and headphone amplifier. The case is definitely protective, though it won't keep out stuff like water or sand, and it won't protect the click wheel. And beware: The device runs off the power from your iPod, so it will drain your iPod battery faster than usual.



Link: PC Magazine