Quite a while ago someone recommended a product called ice and water. It is an underlayment material used in the construction industry. It comes in rolls about 3 feet by about 40 feet it was about 1/8 inch thick. I was able to get a partially used roll at a lumber yard for no cost, It has a very fine gravel surface and a tape on the back which sticks to the table. It is easy to cut with a razor knife and does not require a lot of seems. I put lines on with a yellow paint marker.
Marty