I thought you use this little DIY Book for a CJ or maybe a little doodle book or sketch pad! (Or maybe a journal) So many possibilities!
This post is from: http://mamaslittlemuse.blogspot.com/2012/05/book-made-out-of-one-sheet-of-paper-and.html
"You can use any size rectangular sheet (I have even made itty bitty books with 8.5 X 11" sized paper!) Here are the directions: