Determine also whether you will use a hand-held microphone or wireless lapel microphone or headset. Check beforehand to be sure the batteries are good and the mike working.
How long should your message be? The attention span of children, away from mom and dad, is 3-5 minutes. Make only one point, illustrate it, repeat and tie it to a lesson, then offer a prayer at the end.
You can involve them with a question but be aware there are 2 possibilities when you hold a microphone near a child–they’ll either freeze or ham it up. In either way, you can lose control quickly.
Giving a treat? I try to do that on special occasions, not every Sunday. If you give children candy, be sure to include instructions about disposing of paper wrappers properly.