I once had an EE friend that built these tiny chips he called Annoyers. They simply emitted a loud chirp at a random time interval. The interval was too long to effectively locate the chip, and the chirp was terribly annoying. It could take weeks to find the quarter-sides device hidden in someone’s home (or the battery would just die).

Of course, while he was explaining this to me, the chip slipped from my fingers and fell down an air vent of another friend’s living room. The comedic timing was perfect, and it really might have been the funniest thing to happen to me in 2012.

Sounds like the small slice of hell that is a low battery in most smoke detectors: one short (and loud AF) beep every ~15 minutes. Fine when you have only one, but in a large house you never know which one of these f*ckers is actually the one complaining.