Rug Spikes for Carpet

My rug wouldn't stop sliding around on the carpet, so I designed this to fix the problem. 
Made for my carpet with a >7mm pile depth
Instructions:

1. print
2. use a blade to remove any large strings between the spikes (some strings actually help with the grip)
3. attach to bottom of the rug (using glue or other sticky stuff) with the spikes facing down towards the carpet
4. push into carpet
5. profit?