Conference takeaway
What overarching impression did the conference make on participants? Ask the audience to provide feedback.
More types of activities
Self-paced survey
Ask questions before or after an event that people can answer at their own pace.
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.
Team goal visualization
Ask your team to specify where focus is needed, so they'll be more likely to direct future actions toward that focus.