My husband built me a drying rack which ended up costing about 6.00.
he used: 3 2x4's with holes drilled in them 12" apart - 18" pieces of PVC-
which get stuck in the holes.
6 Large sheets (15 x 48") of scrap cardboard or 1/16" scrap masonite rest on
the PVC, and hold drying art projects.
I think the 6 bucks was for the package of "O-rings" that go on the PVC to
prevent slippage.
Of course, he had a cabinet shop- so, I got all sort of goodie. I can't
imagine teaching art without a cabinet maker in the family!