I did this cake for my neighbor's birthday. She loves to read and gets books in the mail all of the time. This cake was a challenge. I created each panel of the box out of fondant/gum paste mixture several days ahead of time. For the flaps, I used melted white chocolate to fuse together. I wasn't sure it was going to hold, but it was pretty strong. The books are made out of rice krispy treats and then covered in fondant. All of the images are made out of edible icing sheets. When I handed this cake to her husband, I told him the WHOLE thing was edible.....He didn't believe it until they cut into it. Lol!! TFL!