An idea for a series of badges: the rules of teen detective fiction (mild spoilers: all of them are struck out in Meddling Kids). These never went past the Photoshop stage.
By the way, if you don't own your MK copy yet, or want to own an extraordinarily dirty one, Doubleday is throwing a holiday giveaway of signed books! Signed, doodled and pencil-colored by an author with very little real work to do. Follow @doubledaybooks on Instagram for a chance to win now! The girls will be given away today, and the boys are on their way!