My Retrode came today. I've been busy dumping SRAM (that is, battery saves) of everything that hasn't died yet (which is, surprisingly, everything so far as of when I write this post, though I still have several to go.)
My Mario Paint file still exists.
After transferring it over to my computer, I opened it with an emulator and poked around to see what sort of madness I could have created back in the ChocoboKick era.
I apparently made this: