USB thumb drives are pretty ubiquitous these days, what with flash memory being so cheap and that method of storage just being so damned convenient. So why settle for a regular little rectangle of memory when you can get one that will get you stopped at airport security?
The Hand Grenade USB Drive is shaped like, yes, a hand grenade. Simply pull the grip off and plug it in and enjoy 4GB of storage wherever you go. It's available now for $20, but seriously, don't bring it through airport security.