Post-meeting feedback

Make sure every concern is addressed by asking for final thoughts before wrapping up a meeting.
Use Poll Everywhere to ensure everyone is able to voice their opinion.
People respond online or by texting on their phones and the responses appear live for all to see.
Enable anonymity for any poll type to encourage frank or critical feedback. Poll Everywhere makes it easy for shy or otherwise reluctant participants to contribute alongside their peers.
More types of activities

Team idea prioritization
After a brainstorming session, input all ideas and ask participants to rank them in order of relevance.

Competition
Ask a series of questions and declare a winner at the end for the person who scores the most points.

Project feedback
Gather feedback on a project and prioritize the most relevant entries so you can address what matters.