Toddlers, little heathens that they are, love taboos. Especially when the infraction involves a Sharpie marker and your Corian countertop. Crazy making!
I know it seems counterproductive to get your little muralist a gift that encourages this behavior, but at least it'll keep them occupied and away from the remodeled surfaces. This Color-It footstool is extra-sturdy cardboard that can hold up to 60 pounds. Its plain white expanse just begs your child and friends to draw all over it. Just let them go wild: paint, the evil Sharpies, mud, whatever. It's just cardboard, after all. And for your child, it's a satisfying way to engage in a taboo without timeouts.
Color-It also comes in briefcase form, just in case your kid's a budding rebel executive. Find it at www.momastore.org. And let the defacement begin.