Place a circle or sphere in the middle of a free space. Let the team gather around it. Explain that the circle is the center of approval: If they agree to a statement they should move towards it, if they don't, they should move as far outwards as their degree of disagreement. Now read out statements, e.g.
I feel I can talk openly in this retrospective
I am satisfied with the last iteration
I am happy with the quality of our code
I think our continuous integration process is mature
Watch the constellations unfold. Afterwards ask which constellations were surprising. This can also be a closing activity (#53).
Which things are clear and feel good and which feel vague and implicit? Source: Katrin Dreyer
Use this activity if you suspect the team to make lots of unconscious decisions hardly ever questioning anything. You can figure out what things need to be talked about to get an explicit grasp of them.
about 3 metres of string as the clothesline
about 20 clothes pins
a white shirt (cut from paper)
a pair of dirty pants (cut from paper)
Hang up the clothesline and mark the middle, e.g. with a ribbon. Hang up the clean shirt on one side and the dirty pants on the other. Ask the team now to write items onto index cards for each of the categories. Hang up the notes with clothespins and re-arrange them into clusters. Now the team picks 2 'dirty' and 2 'clean' topics they want to talk about, e.g. by dot voting.
Prepare a flip chart with 3 columns titled 'What', 'Who', and 'Due'. Ask one participant after the other, what they want to do to advance the team. Write down the task, agree on a 'done by'-date and let them sign their name. If someone suggests an action for the whole team, the proposer needs to get buy-in (and signatures) from the others.
Prepare 3 flip chart papers titled 'Helped', 'Hindered', and 'Hypothesis' (suggestions for things to try out). Ask participants to help you grow and improve as a facilitator by writing you sticky notes and signing their initials so that you may ask questions later.