Recycling is simple!
A diagram of the rules for the game "Rock, Scissors, Paper, Lizard, Spock" as popularized by the television show "The Big Bang Theory"
Protest for the ethical treatment of the undead
A crest for The Knights Who Say Ni, from "Monty Python's The Holy Grail"
An x-ray of a steampunk version of the human skeleton
A mash-up of the music video game "Rock Band" and the alien band that played at the Mos Eisley cantina in "Star Wars"