I currently have two Lexar JumpDrive Sport 256MB dongles on my keychain. I thought the rubber cap was a good idea since the hard plastic cracked on my last dongle. So far, so good.

Cheap too. I got them for $39 a piece at a CompUSA sale. Currently they're $69.99 there.
_________________________
-Rob Riccardelli
80GB 16MB MK2 090000736