Here we have a really cool repurpose. A shelf made out of a book. A book shelf!!! These books can vary in size, shape, color. Even the amount of books can vary. we can use one book or stack tons of books in a wacky way. these look best on the wall when there is more than one, so we can correlate the books to match each other, like matching encyclopedias, cookbooks, children's books, ect.