My wife uses a hand mirror in the bathroom along with the one on the wall. Often is the time that she has missed the 3M Command hook on the cabinet and the floor collects the mirror; then the trash can collects the mirror. I set out to see if I could put an end to that. 2-sided tape attaches it to the side of the sink cabinet. The outer wall is slanted a wee bit to give her a little larger target.