Traditionally, the book uses text, pictures, and drawings to show information. To complement the information, various methods have been used, such as adding tangible objects or models. With the advent of digital books, it is possible to incorporate videos, interactive graphics, photo galleries, and 3D objects. This article describes the possibilities of including 3D models in books that are paper or electronic (read on a desktop or mobile device). For this article we have made several book prototypes in various formats, and instructions are presented so that the reader can visualize the 3D objects contained in them. [ABSTRACT FROM AUTHOR]