A pile of books
Origami books of different shapes and sizes. The model used here is my “Long story short”, version 1.1 which has a slightly improved lock.
I used several different kinds of gift wrapping paper. While this kind of paper is normally not good for the kind of models I fold, it works very well for this particular model. It comes in many different colors and patterns, large sheets are available (a must if you want to make a large book with many pages), and the paper is thin so the pages in the book look like paper rather than board.