Without looking at your lists, have someone else think about the supplies you ll need. They can add items you may have left off. Also determine the supplies needed for registration, publicity, volunteer expenses, and clean up. Science fairs and other academic events will need prizes or acknowledgments for participating. You may want to do some kind of door prize.
Seminars can include notebooks with outlines, blank paper, and a pen or pencil.
Don t forget to include these items in your budget. You ll need both a planning schedule and an actual event schedule. By mapping out in advance what you need to do by certain dates, you ll avoid rushing to get something done and the mistakes that often brings. Writing out a schedule for the event will help you determine if you have allotted enough time to do all things you have planned. It will also help you on the day of the event to keep things moving along.