I am working for a European ID consultancy and are dealing with an unusual request from one of our US clients. They are putting together a global conference and want us to perform a design workshop with all the participants during the course of on afternoon. We've done several ideation/design workshops with the client, that have been both fun and have yielded good results in terms of concrete concepts to move forward with.
Here is the rub; there will be 92 participants at the conference and they must all participate in the workshop. Furthermore, our client expects concrete concepts to come out of it! To make things harder, we have no information about the venue and we know that we will not have the man power needed to split the exercise up into smaller groups.