Imagine spending time with your favorite children's book characters, all grown up and out on the town. Boston's meetup group for children's authors hosts a mixer with a purpose: Fill out your bingo card by finding characters based on clues from the books that feature them (i.e., "Find someone who enjoys a butterbeer after a hard day at the Ministry"). There will be prizes for the first few to claim "Bingo!" Guests are welcome to sign up to represent their own favorite kid's lit characters. Costumes encouraged (but not required)!