My daughter used to have trouble with her braille reading material sliding around on her desk. I had a bit of unused rug underlay from Ikea, the sticky rubber matting to stop area rugs from slipping on wooden floors. I cut a square out for her desk and it helps a lot. After a while it gets dirty and loses its stick. But washing it in the kitchen sink with dish soap and dish brush restores it pretty much like new. She keeps a second square with her in her backpack for use at her after-school program.