I made one. The cheap cotton ones just didn't cut it for me. And the silver ones are so cheap now. I used heavier fabric duck cloth I think and just added elastic. Its cream colored so I just slip it off when it gets dirty and wash it.
I stapled an old sheet to my big board so that one will have to be pulled apart to change. When I move I am going to see if I can make the set up permanent then I will make one I can take off and wash.