Although I am old enough to remember using 3 1/2 inch floppies, I have never used the larger (& truly floppy) 5 1/4 inch disks. Because they are soft, I decided to use one for the front cover & covered board for the back cover. The disk has a round hole in the centre which is perfect for showing a picture from the inside of the book. I knew I had a die cutter which produced a small skull & crossbones which was just the right size to peek out from this hole. I cut the pages from white paper with an extra black one to be the front page. I also found some paper with a funky skulls pattern for the back cover.