Participants show how they feel by drawing a face on a tangerine Source:
Each team member gets a sharpie and a tangerine with a sticky note asking: 'How do you feel? Please give me a face'. After all are done drawing you go around and compare the works of art and emotions. It's a light-hearted way to set the stage.
Thinking back about the discussions, everybody writes a reminder for her- or himself about a change in their own behaviour they want to try during the next iteration. It's for quiet self reflection and is not shared with the group. They take their respective sticky notes with them to their desktop and put it in a place they will look at often.