What: walk around and look at all the mindmaps. For 5 people, write 1 compliment about something you think they've done well on the post-it note. If a person already has 5 compliments, look for someone who doesn't already have 5 compliments.
How: Look, talk about each other's mindmap, ask questions and then write
Time: 5 minutes
Done? Sit down and see if you can improve your mindmap
(quietly)