What’s the stupidest/weirdest project you used a RPi for?

This thread on reddit has some really fun ideas for a Raspberry Pi. Some of my favorites:

Comment from discussion What’s the stupidest/weirdest project you used a RPi for?.
Comment from discussion What’s the stupidest/weirdest project you used a RPi for?.

The NoIR module is a camera for the Raspberry Pi with no infrared filter, which means you can use IR LEDs to light up a room without anyone seeing.

Comment from discussion What’s the stupidest/weirdest project you used a RPi for?.

Photo credit: Multicherry (CC) BY-SA