Demos are a common activity you find in the SCA. They educate the public about life in the Middle Ages, show off our crafts and skills, and help us find new member.
Today the Barony of the Lonely Tower put on a demonstration at the University of Nebraska-Omaha. The university's Medieval and Renaissance Studies Department promoted it, calling it "Encountering the Past: Costumes, Crafts & Combats".
You couldn't ask for a more beneficial three hours.