I have a small bulletin board that I wanted to decorate once and not spend a lot of time changing each month. I call it "Use Your Noodle" and I have a big picture of a brain. I post a joke, riddle, analogy, tribond, or trivia question each week. It helps with some of my really literal kids and is a quick way to start or end each session. The kids always remind me if I don't put up a new one. I just printed a ton I found on the internet and sometimes get new ones from kids. They can even write them.