@ryathal back in the day, when most wireless mice and keyboards had those little dongles, and people used to keep their computer tower either on the corner of their desk or under it, I used to have a prank war going with a coworker. We used to do dumb shit like fill a shit load of little cups up with water and set them everywhere in their office, or glitter/confetti in things that when you opened them it went everywhere. Or wrap everything on the desk in foil or saran wrap type things.

Coworker was older than me, and not the most computer literate guy. I'd go into his office, and disconnect the dongle, while he was away from his desk. Watching him rage about his piece of shit computer was always great amusement.