I bought one of the Home Depot Husky "Industrial Duty" shelving units with the steel wire mesh shelves. I like the mesh as I don't expect it to sag over time like the cheap particle board shelves tend to do. It works fine for anything biggish with a flat bottom, but for smaller stuff or anything with an irregular shaped bottom the wire shelving *****.
Looking for ideas of something thin, cheap and at least semi-rigid to lay on top of the mesh and am wondering what others have used. I am afraid thin hard board or particle board could still curl/warp and tends to go to hell quickly when anything is spilled on it.

Looking for ideas of something thin, cheap and at least semi-rigid to lay on top of the mesh and am wondering what others have used. I am afraid thin hard board or particle board could still curl/warp and tends to go to hell quickly when anything is spilled on it.

