Photo: From the video Make Your Own Comet + Gaze at the Stars by ScottMarkDaddy
Did you know that amateur astronomers do demonstrations at schools, colleges, museums, parks and libraries? You can watch Bernie Hosko, of the Willingboro Astronomical Society in New Jersey cook up a comet using dry ice and simple household materials in Make Your own Comet + Gaze at the Stars.
If you teach at school, work at a library or museum, or other public venue, contact your local club and ask them if they can do a demonstration for your class or group. If you become a club member, you can do this kind of outreach with your fellow members! Some members even do outreach globally. Joan Chamberlin of the Astronomical Society of Northern New England, did a light pollution demo at Celebration Co-Ed School in Kathmandu, Nepal.