If a classroom door needs to be left ajar, these door cushions work well. They are intended to keep toddlers from getting fingers pinched but they also work well to prevent a door from slamming or latching. Tethering with some cord keeps it from wandering off. It’s a simple shape constructed of dense foam rubber, so it would be easy to make one and save four or five bucks. One of those, extra thick swim noodles would probably make a couple-dozen of them.
