A couple of years back, I found these USB flash drives which looked like miniature submarines. I always thought they looked pretty cool, but I think they never got past the concept stage. But you can still live out desktop reenactments of Das Boot or The Hunt for Red October with this submarine-inspired USB hub.
The submarine USB hub not only offers five USB (2.0) ports, but it also works as a memory card reader, with support for SD, SDHC, micro SD (T-Flash), micro SDHC, MiniSD, MS duo, M2, and XD-Picture cards.
Despite its submarine styling, I would say with 100% certainty that you shouldn’t go floating this thing in your bathtub unless you want to ruin all your electronics and risk electrocution. You can get the USB sub hub over at Infmetry for $21 (USD).