Mozmonkey has made a keyboard which sings when you press the caps lock key. It's one of the least used keys, and it controls an LED which can be easily modded to control a speaker instead.

The second victim found it sometime after lunch. I wandered by, acting as innocent as I could, and suggesting "Try turning your sound off" then asking "Did you install anything today? Could it be a virus?" She started getting a bit concerned and I couldn't hold a straight face any longer and ended up giving away my guilt.

The last guy never uses caps, so after waiting 2 weeks for it to happen I coerced him to press the key. He did and we had a good laugh about it.

I still have 5 more units setup and ready to go, I just have to find more victims"

View: Singing Keyboard