For those enjoying USB mode... I found an interesting cheep item online that claims to be usable with the N900 (no, really, right on the page...)

I got a couple, and will let you know how they work when they get here in a few weeks. But for the price is worth trying them out. Standard caveats apply: Don't put pressure on your USB port. Don't try to use this to hold your device in the air. Don't play tennis with your N900. Etc.