I remember a guy I worked with lost his torch, one of those Led Lenser metal ones one night, and it wasn't until later that he realised that he'd left it in the rear fuselage of one of the aircraft we were working on. He decided not to tell anyone (naughty, naughty) and two weeks later when the aircraft came back to the hangar for maintenance, he went into the back and it was still sitting there, where he'd left it! Undisturbed and unnoticed! He told me after he left the company!Searching for that missing 7/16" six point socket!
The company began hammering tool control after a spanner was found left in a fuel tank after a heavy maintenance visit! We on Line used to complain about the defects we'd find after heavy checks because for a period a few years ago there was always something, tape over AC ducts, rags left in engine bays, fasteners not done up properly, all sorts of issues...