Dashboard air vent




Like shotgun_banjo says, you could use some fine wire mesh and form a little cup around a cylindrical object (wooden dowel, thumb, etc) and then just friction fit that into the hole. It may take some trial and error to get it clean looking and the correct size to allow it to stay in place, but that is likely a better option than replacing a perfectly good dash.
Of course you then have to keep "someone" out of your car as they may just start poking at it again....



