Pace/Chubbychopper;
If I remember rightly the keys down the intake was Arnold Palmer the golfer.
All our aircraft keys have red remove before flight flags on them and stow on a hook in the cockpit just to help avoid that one.
Whilst parked for any length of time they go in the external power socket so that all crew know where they are. We started that after a member of PPRUNE left an aircraft (locked) in Las Vegas and jumped on a flight back to the UK with the aircraft keys in his pocket, and the new crew and all the passengers in Vegas!
SND
P.S He's reading this as I type, reckon my next sim trip may be a bit interesting..................