Does a 1988 Trane RTU count, the boss wrote an all inclusive contract on it from his desk, LOL
I'v only done commercial so nothing cool.
But i did find a 4' aluminum pipe wrench on a roof.
Some porn mags in a machine room.
Nothing as cool as the others so far, found some drugs on the roof of a theater, a leatherman tool in a drop ceiling, several snake skins in basements.