Re: what would you buy??
Buy a piece of white poster board. Cut it in half on the long sides. Lay a half sheet shiney side down where you tie, set your vise in the middle. It will protect your desk, it helps diffuse the light, and make it easy to see materials on hand.
"Every [child] has the right to a first fish. On this particular planet, no man is granted a greater privilege than to be present and to assist in the realization of this moment". Bill Heavey