Carpet slip stop to keep your carpet in place

A 220x220mm grid to be placed under your carpet. The added friction will prevent your carpet from slipping under you on a smooth floor. The grid can be resized conveniently and is durable. 

These cost about 10-15 cents per piece at 220x220mm.

Note: Print this out of a soft material. I used TPU 95A, which worked well to prevent slipping. A textured plate could help with added grip if the textured side is placed facing the floor.