We journey upstream with environmentalist Dan McCormick, a maker who crafts intricate watershed sculptures out of woven willow. In the Workshop, John Park shows how to build lively and inexpensive miniature robots. Mister Jalopy reveals the hidden treasures of his “Compact Childhood Museum.” The Maker Channel segment features French fries shot from a spud gun, freeline skates that ride like a skateboard, an Asteroids game wrist watch, and a motorized wheel chair that shoots flames.