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
Self-paced survey
Ask questions before or after an event that people can answer at their own pace.
Teams by color
Split your participants into teams by color. Future questions can then segment responses by team.
Team idea prioritization
After a brainstorming session, input all ideas and ask participants to rank them in order of relevance.