Alice McFlurry 
I was reminded of the time when I took a class on InDesign and we had to create a trifold brochure and I HATED the assignment, so I rebelled by making a fake flyer for a nonexistent petting zoo using a bunch of photos of aggressive animals.
My husband (@KevBot) and I took several classes on things like Photoshop, InDesign, and Illustrator and we were always making weird stuff purely for our own entertainment.
These are some of my favorites:
(1) Assignment where we were given a random art movement and had to create a poster in that style. Kev got Constructivism and I got Pop Art.
(2) Assignment where we had to make an ad for a company/product using a famous painting. Kev made an Osh-Kosh ad with a Renaissance painting and I threw some shade at Jackson Pollack.
Su-Shee