I use the term"books" lightly here. For this, we folded two strips of black paper accordion-style and taped a square to the back and a square with a hole in the front. Then they cut paper to create the scene of their choice inside their tunnel. This is a wonderful lesson for habitats or foreground, middle ground, and background.
I was worried that they may not make their accordion folds straight enough for this, but no one had a problem with it! I'll post a video of this project process soon. For now, here are some beautiful finished products!