The muppets! Just anything muppet related and you’re all good, be it cranky old men puppets, bitchy pigs, or whatever else. Go nuts and do it your way!
You’ve got 45 minutes to create followed by 15 minutes to submit! Have fun~
Source: https://night-dark-woods.tumblr.com/post/185437985908/id-simple-digital-drawing-of-kermit-the-frog