Einstein, or DaVinci?

Colored pencils are the current method of choice for keeping Eli occupied while I try and get things done around the house. I can put him on the floor with some paper and pencils and he will entertain himself for 30-40 minutes... pretty amazing for Eli! If I move to another room, he will follow me with his paper, plop right down on the floor and continue to "draw". He went through an entire pad a paper in just a couple of days! Oddly enough, he even understands it when I say, "you can only draw on the paper," so we have very few stray markings around the house. Unfortunately, "paper" includes books, the mail, and Daddy's work articles, so we still have to watch him pretty closely.