Here are a few kid-smart solutions, courtesy of First magazine:

• Right off the bat, if your pint-size Picasso creates a crayon masterpiece on your living room wall, try this: Mix 2 tablespoons of baking soda with 1 teaspoon of water until it's the consistency of toothpaste. Then, using a damp white cloth, gently rub the paste in a circular motion until the marks disappear. The soap-like compounds in baking soda will dissolve the color, and the mild abrasives will buff away greasy crayon wax without damaging the wall.
• Here's the secret to reviving dried-out magic markers: Pour a half-inch of acetone nail-polish remover into a paper cup, and soak the uncapped markers for 30 seconds. Then, set them aside to dry for 5 minutes. It restores moisture and draws ink into the tips, without diluting the color   and the markers will be better than new!
• And finally, erase ground-in dirt, grime and ink from your child's favorite doll with peanut butter. I kid you not! Just smooth a thin layer of peanut butter on the doll's plastic face, arms and legs with a dry cloth. Leave it for 5 minutes, and wipe away with a damp, soapy paper towel. Why does it work? The oil in the peanut butter seeps into the porous plastic, and absorbs the embedded dirt that scrubbing just won't get rid of.

To recap, get rid of crayon wall drawings with a baking soda paste, revive magic markers in 1/2 an inch of nail polish remover, and clean plastic dolls with peanut butter. And your child will think you can do magic!