You want a mod that lets you find your car in a busy car park. Not far from us is a shopping mall with a 5 floor parking garage. None of the bays are numbered and you only figure out where you are when you step into the lift and check what floor it is. My wife has gotten lost twice in there and was certain her car had been stolen.
Some people stick a plastic coloured ball on top of the radio aerial. Looks tacky but does the trick.
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