You can organize conference participants into teams for a fun karaoke competition. This can include teams of people from company divisions scattered across the country, or the globe. These people may never have worked together and may not know each other.
Teams can contain a mix of newer staff and more senior members.
You get a relatively low cost, very low risk method to help your staff function better as teams of diverse individuals. Managers can observe how individuals function when required to place the welfare of the group ahead of personal interests to achieve a desired outcome. If the team wants to score high in the competition, they must work together. They must identify talent within the group and assign the best person to the tasks. In this instance tasks include singing, dancing, props, possibly costumes and organizing.