I bought a school bus a few years ago and had to park it at a lot in a pretty bad neighborhood (like, the kind of place where you step on a syringe if you're not careful). I started converting it to a motorhome and I would leave my tools in it overnight. Of course I got robbed and everything was stolen - hand tools, power tools, even my generator, although I found that again stashed behind another vehicle on the lot because one of its wheels had fallen off. So I started leaving only cheap supplies in it and I still got robbed, three more times. One of the robberies was them taking sponges and masking tape. The only good thing was they stole the seats and ceiling panels I'd removed, sparing me the expense and hassle of getting rid of the things myself.