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.
Visualize how information flows in, out and around the team Source:
Is information not flowing as well as it needs to? Do you suspect bottlenecks? Visualize the ways information flows to find starting points for improvements. If you want to look at one specific flow (e.g. product requirements, impediments, ...) check out Value Stream Mapping (#79). For messier situations try something akin to Cause-Effect-Diagrams (#25). Look at the finished drawing. Where are delays or dead ends?
Find the source of problems whose origins are hard to pinpoint and lead to endless discussion Source:
Write the problem you want to explore on a sticky note and put it in the middle of a whiteboard. Find out why that is a problem by repeatedly asking 'So what?'. Find out the root causes by repeatedly asking 'Why (does this happen)?' Document your findings by writing more stickies and showing causal relations with arrows. Each sticky can have more than one reason and more than one consequence Vicious circles are usually good starting points for actions. If you can break their bad influence, you can gain a lot.
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.