My students sit on the floor for group activities. In the past, I've used mats or carpet squares to designate where they should sit. They are a chore to move and the children continually shift about on them. In searching for a solution, I took colored hook side Velcro, cut it into four-inch strips and wrote each child's name on one. The strips cling to the carpeted floor and can even be vacuumed over. Now the children no longer move about.