Goop-Proof Polka Dot Chairs

I wanted some funky polka dot chairs for our foyer, but I couldn't find the right upholstery fabric that would resist sticky kid fingers. Just as well! I bought a couple of chairs with plain beige upholstery and painted over the fabric. Then, I topped it with a coat of polyurethane, so now they can be wiped clean.

Source of ideas:
Polka dots! - big juicy ones.
Black marble trim on my foyer floor.
I wanted to be able to wipe the seats clean.