Some decades back, I was the workshop manager of the grounds maintenance division of a London council. One or two areas we operated in were known hotspots for unattended items to go missing, the areas had high numbers of pikeys and travellers who had a reputation for nicking anything that wasn't nailed down.
over a period of a couple of months, several mowers and strimmers had gone walkies and I had to set up a system where each operator had to sign for his kit each day to try to find out who was most lax and to make them feel more responsible for their kit.
The first weekend after the signing system was set up, one of my mechanics went to a boot fair some forty miles away and discovered a stall with a load of our kit still in it's colours that we painted on to everything and still wearing the engraved stock numbers.
The stall holder? One of the mowing team members and a mate from another council who was providing stock too.
They both received early morning visits from the constabulary.