Conference takeaway
What overarching impression did the conference make on participants? Ask the audience to provide feedback.
More types of activities
Audience demographics
Put subsequent question responses in context by gathering some quick demographic data from the audience.
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.
Audience consensus
Find out the degree to which participants agree with a conclusion on a sliding scale clickable image.