Arabelle colored this on a piece of scrap cardboard last week. She said you can turn it one way for day time (with the yellow on top) and the other way for night time (with the black on top).
I think their favorite thing to do is cut paper though. I save magazines and they do a lot of cutting. Arabelle likes to cut a page out, then make a puzzle by cutting the paper, then taping it back together. :)