My dad told me his Roomba vacuum cleaner would often get trapped inside their laundry room when it was cleaning because it would continually bump into the door until the door swung open a bit. It would then get behind the door and close the door on itself becoming trapped. He wanted something to prevent the door from closing, but not something that was on the floor that would interfere with cleaning.

I designed this really dumb thing to solve the problem. It works well, but makes me nervous because if you were to forget it and closed the door, you could easily damage the hinge area. it clips over the top of the hinge pin to hold it in place.

I figured I would post in just in case someone found a use for it or wanted to remix something that fit over a hinge. This one is made to keep the door open at 90 degrees. I also included the Fusion 360 file.