What is a book nook? A book nook is a little book-shaped room that you position between your books to give the illusion that their is a tiny world full of magic existing behind your shelves. Sometimes also referred to as a dioramas or a bookshelf inserts. Join us making your own book nook to bring your own personal magic to your book shelves. We will provide everything needed, but feel free to bring tiny items that may look lovely in you book nook such as tiny pieces of cloth, ribbon, doll house pieces or tiny pictures.