Let's Make Macaroni and Cheese is an accessible powerpoint book, created by Holly Cooper of Texas School for the Blind and Visually Impaired.  It includes audio output and can be operated by a simple switch.  This particular example shows how books can be made to show preferred activities, experiences from a student's life, or step by step instructions similar to a recipe in a cookbook.  She also shared her step by step directions for Making a Simple Switch Accessible Power Point Talking Book.