Do you have an Ikea or similar ?
They sell a mat designed for offices (home offices probably) which goes under a chair with wheels to stop it marking carpets or floors. Neat thing is that its clear plastic, quite thick (roughly 2-3mm thick), flexible and best of all quite cheap. I have one for my prototype upper grill block. It was an interesting coversation with the Mrs when I bought it.
Another option is stationary (as in office stuff) shop. They sell plastic folders for documents and some of them are also quite thick and flexible, or you can double them up to be as thick and strong as you need.
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[I]So long and thanks for all the fish.[/I]
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