Milton Wright’s preaching took him on the road frequently, and he often brought back small toys for his children. In 1878 he brought back a small model helicopter for his boys. Made of cork, bamboo and paper, and powered by a rubber band to twirl its blades, the model was based on a design by the French aeronautical pioneer Alphonse Pénaud. Fascinated by the toy and its mechanics, Wilbur and Orville would develop a lifelong love of aeronautics and flying.