I have GOT to have one of these, if only for the garage computer. Solid Alliance USB Hub for motorcycle fans:

The three port USB hub is in the shape of a motorcycle engine, when connected to the PC it imitates the noise of the engine starting, when the kick pedal is pushed the sound changes to as you accelerate a motorbike with gear change along with the engine vibration and finally to a racing bike sound.

Update: Soren found the place to buy it online.