The shopping cart is not as random as it looks, I promise. I am a little ashamed to admit exactly how long I worked on that shopping cart (and at what a high resolution, holy crap), but the cart stuck out in my head so much every time I went to draw something, because it was such a genius thought on Sam's part and really did mean a lot in the fic.
The original size of the canvas I drew it on is 1786x2075. Because I am insane and, also, used Paint Tool Sai, which is awesome, but which I also have on good authority makes better pictures if your draw on a significantly larger scale and then shrink after. If you click on the banner it links through to the gigantic shopping cart so you can see the details and the flaws I am only noticing just now.
Candy and pastries are a big thing in this fic, so I decided the chapters had to be made out of them too. And again, because I am a freak and actually OCD, I hand-drew the cupcake, the pie, the Long Johns, and the M&Ms. This is the giant slice of pie (it looks better when shrunk), and the Long John, giant-size.