Continued Education credit
If your company offers Continuing Education (CE) credits for attending training sessions, ensure that everyone receives their due by taking attendance.
More types of activities
Teams by color
Split your participants into teams by color. Future questions can then segment responses by team.
Spark engaging dialogue
Build lasting relationships with your team by asking (and sharing) what they have learned about themselves. Bonus: ask what positive changes can be made as a result of these learnings.