If you haven't seen or heard of a book nook before, it's a shelf insert that fits between books and looks like a tiny door or window leading to a magical place. They can be constructed of different materials like wood, cardboard or paper.  My book nooks are made from the front and back covers and spines of books. The three rooms include a calm reading room, an inspirational art studio, and another small nature study room. The rooms are filled with my tiny personal art creations and my collection of miniatures.