Here are some guidelines when considering a booth activity.
Your space should be used to hold an entertaining, quick experiment, game, or demonstration. You should expect to have your visitor's attention for only 10 minutes or less.
Although the event will attract a wide range of attendees, the bulk of those attending will be school age children and we want the focus of exhibitor activities to be toward children.
Promoting your products and services is okay, but approved projects will demonstrate utility in the context of STEAM learning.