Using the team mapping method described by Jamie Nast in her book "Idea Mapping", helps overcome some of the drawbacks of what might be called traditional brainstorming. People can be put off by having to call out ideas and the group can be lead down the path of the strongest or most vocal member. Having everyone brainstorm on their own and on paper as a first step allows everyone to contribute in their own way. The results are then posted for the group to review and this is where the most powerful cross-fertilisation of ideas can occur.
In this example, I provided a map template for the participants to use as this was the first time they had used the technique. The individual maps were then posted on the wall and reviewed by the group. Individuals were seen to add further ideas to their maps during this process as they were stimulated by what others had put on their maps. The maps were subsequently consolidated outside of the workshop.