You can get roll on bed liner from the auto parts store or Wal-Mart, of course it's going to be more than you need. However, I expect if anyone ever decides to make a liner it would cost the same price as a can of roll on bed liner. You just have to wipe the bed down with alcohol or acetone. Stuff it with some 400 grit or even a scotch brite stuff pad.. You could probably have it clean, prepped and rolled in under an hour.. Also you can lay it on as thick as you want..
Look at the brand's some give the rubber type feel while others get rock hard..
Side note: If you want you can add sand to give you more slip resistance.