I have found the denim rag quilt concept is great for floor mats. I have made a few with no batting or backing, but still using quilt block patterns on a scale suitable for ragging (8 to 10" squares, maybe?) The ragging feels great on the tootsies in the bathroom, at the sink or just outside the shower. Also nice for teens' rooms or the camper trailer. No batting or backing means faster drying, and the denim is so durable!