I made this due to my door constantly closed itself, when the furnace or AC would kick on. My bedroom door is directly across from the intake, and would be pulled shut. This was particularly annoying when I was carrying something from another room, and would come back to a closed door.

This is meant to be very unobtrusive, and screw into the door trim.

Won't support a ton of weight, although I've accidentally tried to close the door with it deployed, and it didn't break. I printed it in ABS for this reason, I would imagine PETG would work well too.

The mount to the door needs to be printed flat, with supports. It screws to the trim with a small self tapping screw.