I hadn't thought of that! I have an extra roll that I keep on hand for new rulers. I'll have to try some of it and see if it works. I'm not sure if it will work on my big mat since it has a textured background, but it might work on my blue mat. Thanks! Any other ideas are welcome, too! I'd hate to put all of my eggs in one basket, and not sure how to adhere a textured mat to a smooth surface.