I recently found some oversized mouse pads. Seem to be well made, just over 1/8" thick, 2 sided materials, etc. The one I bought is about 13.5" X 17.5" Notched it for a verticle panel in the desk, put it all on a nice piece of 12" x 32" glass. The glass is great for eating and drinking off of, and all is readily cleanable. Just modify a large flat mouse pad to your needs. Forget where I got it, but it was through a google search.