My son loves to draw. Floors, walls, on his Thomas the Tank Engine trains, his hands and toenails, the fireplace, his mouth, our dog and bunnies - it's all fair game for his self-expression via Crayola markers. One thing I have learned well is to not freak over losing control as a parent. FYI - you are always totally out of control. Pro tip - go with it. If it's not dangerous, don't trip. The reward? Watching his expressions of concentration as he does his first card alters. Truly. Priceless.