I have two tables on risers that I put together side-by-side in the garage. The I made what I thought was a great addition - I covered a sheet of plywood in flannel to put on top of the tables to lay out my quilts to sandwich. After I tried pinning my first quilt I realized my mistake. I started gathering old cutting mats which I turned over and laid on top of the flannel covered board - then I could tape the backing to the mats and continue with the sandwich! Voila!!!!! Another use for old mats.