I also made one of these. DH had the rigid foam leftover from another project and the adjustable table was found at WalMart along with the vinyl table covering. If you use clear vinyl you can put project directions or pics of the grandkids under it! I love mine and it helps to keep me from getting the kink I get in my shoulders from when my machine was too high on a regular desk. We did have to put small risers under the table legs to help get the height just right for me. It's not the prettiest sewing table but it works great. I highly recommend this.
kathyd