I put a cable tie on my hold luggage with a pair of nail cutters (so I can open it) in an externally accessible pocket.
Stops light fingered baggage handler from taking a dip, plus makes it very obvious when I collect my luggage if someone has been inside, and that I should check then and there if anything is missing.
Replacement cable tie for the return journey is kept in my hand luggage or coat pocket.
Biting the hand that feeds IT
