Short, Hands-On Outreach Ideas?

[Dinokaiz2]

Hi, CD-

Our team is looking to put together a quick, hands on robotics outreach that we can finish in an hour. By hands-on, we don't mean driving our robot or something else that we've built, but instead having the attendees build something of their own. Ordinarily, we teach how to build a small robot using Arduinos, small motors, and scrap, but that usually takes us around 6 hours. We couldn't think of any good ideas that would fit in an hour and involve work in mechanical, controls and programming. Any ideas?