A friend of mine was just taking off from a remote strip in a Queenair, not many passengers, but one was a Catholic priest who sat in the seat behind him. Just after rotation as he was tucking the gear away, this bell went off. "Holy Cow - fire bell - which engine? - wait a minute, things are looking normal, -what the..?" Then the priest became very apologetic. Turned out he had an alarm clock. The old wind up type with the big loud alarm, in the handluggage. Sounded just like the one in the aircraft. Scared the Hell out of my mate.