Everybody sums up the last iteration in 3 words Source:
Ask everyone to describe the last iteration with just 3 words. Give them a minute to come up with something, then go around the team. This helps people recall the last iteration so that they have some ground to start from.
Each participant tells a story about the last iteration that contains certain words Source:
Provide everyone with something to write down their story. Then introduce the shaping words, which influence the story to be written:
If the last iteration could have been better: You set a couple of shaping words, e.g. such as 'mad, sad, glad' or 'keep, drop, add'. Additionally they have to write their story in first person. This avoids blaming others.
If the last iteration was successful: The team can either choose their own set of words or you can provide random words to unleash the team's creativity.
Now each participant writes a story of no more than 100 words about last iteration. They have to use each shaping word at least once. Timebox this to 5-10 minutes. When everyone's finished, they read out their stories. Afterwards lead a discussion about common themes of the stories.
Brainstorm what behaviors to keep, drop & add and pick the top initiatives Source:
Divide a flip chart into boxes headed with 'Keep', 'Drop' and 'Add'. Ask your participants to write concrete proposals for each category - 1 idea per index card. Let them write in silence for a few minutes. Let everyone read out their notes and post them to the appropriate category. Lead a short discussion on what the top 20% beneficial ideas are. Vote on it by distributing dots or X's with a marker, e.g. 1, 2, and 3 dots for each person to distribute. The top 2 or 3 become your action items.
Let team members appreciate each other and end positively Source:
Agile Retrospectives who took it from 'The Satir Model: Family Therapy and Beyond'
Start by giving a sincere appreciation of one of the participants. It can be anything they contributed: help to the team or you, a solved problem, ...Then invite others and wait for someone to work up the nerve. Close, when no one has talked for a minute.