On the go for me means the iPod and headphones. The rest of the stuff stays at home, especially the firewire cable. FM transmitter stays in car when it get here. Currently I use a small camera case bought from Traget for a mighty $3.99. Its padded, fits the iPod well enough, has a belt clip and mesh pocket for the earbud, although my Sony earphones dont fit it. Marware has new cases available, according to Apple.com, as does DLO. DLO wont ship for a few more weeks though.