In case you haven't been introduced to the Pigeon yet, he is the star of a series of books by Mo Willems; the first one is Don't Let the Pigeon Drive the Bus! We read that and Don't Let the Pigeon Stay Up Late! in K, and I am happy to report that MOST students resisted his arguments (a few were willing to be bought off by his promise of five bucks).
Then the kids came up with their own rules for the Pigeon ... I especially like that one student (see last photo) doesn't want him to knock over the bookshelves. Which is an excellent segue into our next lesson, when the kids will teach the Pigeon book care rules as a prelude to their first checkout.