• Build an elevator at one of the biggest elevator manufacturers in the world

A bunch of elevators in Helsinki run on 286s. Yes, really. One of them where I work has a 286 that crashes all the time, seemingly due to a corrupt boot floppy (and it's probably one of the really floppy, ancient ones). It's the machine that indicates which floor the elevator is on and where it's going to stop next. Luckily the movement itself seems to be controlled by another system. The BIOS is dated 1991.