Our campus is a "ranch-style" campus in that it's spread out and every classroom opens to the outdoors, as opposed to being a large building with classrooms opening to interior hallways. Because it's so spread out we actually have 3 staff rooms, one on each side of campus and one centrally located in the office.
There are some unofficial rules that have developed over the years. If something is in a cupboard or in a refrigerator, don't touch it if it's not yours. If it's on a table it's fair game.
Usually that applies to food. But last night I was going through my closet and I found 4 shirts I hadn't worn in forever,a couple of which still had the dry cleaning tags on them. I know how to get rid of them! On my way to the central staff room this morning one of my students stopped me to ask why I was carrying hangers of shirts--a minute later it was one down, three to go. The remaining three made it to the staff room with a "Free To Good Home" sign, and by the time I went back this afternoon to pick up my paycheck stub there was no sign of any of them!
Does your school operate in a similar manner?