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.
Multiple choice
Ask a question and people choose a response from a set list of answers.