Just about every children's magic or clown does the magic coloring book. Unfortuantely, so have a lot of kids! If you want to fry the youngster who thinks that they know the method, this prop is for you... a blank Coloring Book! I had a girl tell me her grandfather had shown her the secret of the magic coloring book. I left my blank version lyuing out after the show. The grabbed it to show her friends but for some reason she couldn't get it to work! You can hand this out for examination during the routine and a simple switch while grabbing a wand or calling for a volunteer will really mystify even the most challenging child.