I thought about the clear vinyl but I think it's too grippy for what I need. I do ruler work on this machine, which means I'm pressing down on the ruler to keep it in place, so the surface has to be as slippy as possible to help make up for all that friction caused by downward pressure.
I probably have enough at home I could try it for part of the table and see, but I feel like it's going to be too rubbery.
Shower curtain might work though....I hadn't thought of that.... Some of those are pretty slick feeling...