Chair Mat Slide Stop

Forgive me for the rough model…. it's the first one I made. Pretty simple concept. I have a large plastic carpet protector/mat in my office that refuses to stay in place. It tends to creep under an Ikea bookshelf next to me and I'm constantly fighting to get it back in place. So I made this simple “clip” that slots over the floor mat and backs up to the bottom of the bookshelf. I added the hole simply to reduce material usage. Nubbins added to bottom to help grab the carpet a bit.