Late last week, Griffin announced the availability of the iTrip Pocket
, their smallest FM transmitter yet. Designed to match the overall look of the iPod nano, it's about the size of a matchbook and will work with the 1st and 2nd generation iPod nano, as well as the 4th and 5th generation iPod. Plus, their "Smart Display" feature lets you adjust settings on the iPod's screen.
The tiny little transmitter fits right on your keychain and costs $49.99US.