Once upon a time I bought a used copy of Wind Waker which didn't come with a cover, though I guess that's completely within reason considering I paid $20 for it. So today while I was unpacking things, I found the generic case with the stupid default "we swear there is a video game in here and it is the one you are looking for," cover I always find on the boxes for the discs I assume they found under a dumpster and whose previous owners thought were shiny coasters, and decided to draw my own cover.
Then the back looked awfully empty, so I drew an alternate cover:
Now if you'll excuse me, I'm going to go try and sell this at a convention as a super secret, until now completely unheard of, limited edition case.