Following on from the keyboard gag being the reason for purchasing my first Leonardo, see My Arduino Babies and something useful to make with a ATtiny, see A tiny one, here is a self contained list of keyboard and mouse prank projects.
- Mouse Prank with Arduino
- Emulating a USB Keyboard with Arduino Leonardo – Make a “Google Bike”
- WIP: V-USB Prank Board w/ ATTiny85
- Computa pranksta user manual.html (although I can’t see the code, which is a shame). Here is a similar code for the DigiSpark, which seems to be the same as the DigiStump, Digispark prank keyboard driver.