Have participants sit in a circle, arranged around the bowl or basin – this will be the cauldron. Give everyone 3-5 slips of paper.
Explain the rules for the discussion: every time someone speaks, they must throw one of their paper slips into the cauldron. Once a participant runs out of paper slips, they can no longer speak.
Introduce a topic, and facilitate the discussion by asking a series of questions to the group. For example, if the topic is malware and viruses, you might ask the following:
Continue the discussion until everyone has run out of paper slips - you can reactivate the conversation if you wish, by moving on to a new topic and handing the paper slips back out to everyone.