Sliding group members

Small group discussion on a question, then one group member shifts to the next group (in a circle) and explains what their group talked about.  Then get a new question in new groups.  This gets different perspectives into existing groups and gets people talking to new people.  Choose a random characteristic to decide who rotates rather than having groups pick (closest birthday, who stayed up latest, etc).  Could also do a game to pick, like “the nose goes”.  Having questions printed helps, as does having them individually on different colors of paper to help groups keep track of where they are.