I read in today's paper that Rust-Oleum has a new Dry Erase Paint. It is a two part process that you mix together and it produces a white surface that can be written or drawn on with dry-erase markers. It can be applied to interior surfaces, incuding drywall, Masonite, wood, concrete, and metal. Sold at Lowe's and is coming to Home Depot. It says it makes enough paint to cover about 7 feet by 7 feet and costs about $24.