Table Desk Looking For An Easy, Temporary Way To Turn A Desk Into A Waterproof Work Table- Any Ideas?

Looking for an easy, temporary way to turn a desk into a waterproof work table- any ideas? - table desk

I use my mother's old sewing table as a desk. I want to be able to use the area for other projects, but rather as chaotic, and I will not ruin your table. Can you think of an easy-to be taken to do? Thank you!