Topics for next class
Student questions often go unanswered during a class discussion. Collect them before they slip way so you can discuss them during the next class.
More types of activities
Teams by color
Split your participants into teams by color. Future questions can then segment responses by team.
Sprint retrospective
Gather feedback on the last sprint cycle to improve efficiency and productivity during the next sprint.
Sales pitch showdown
Hold a sales competition, then ask the audience to choose the team that gave the best sales pitch.