I made one a long time ago from a pillow print (about 18 inches square). I quilted two of them for the front and back and added "pages", one of flannel (or fleece) and one of regular cotton fabric. Then I assembled them into a book, sewing down one side only so it opens up like a book. Added fabric ties so I could roll it up and tie it and nothing would fall out. Put one block or pieces for one block, between a flannel and cotton page and I don't remember now but I think it held 8 blocks securely.