I used to work for a sign shop locally here and i have some material called lexan its used for illuminated sign faces typically but it works so well for what your talking about if you or someone you know is handy with tools it might be worth paying a visit to a local sign shop in your area and building something with this wonderful material usually its a 1/4" thick and stands up to alot of use i also use some for a cutting surface and its very gentle on my rotary cutter blades hope this helps or inspires an idea. Chris