Cicada wing, horseshoe crabs from a beach in Delaware, mussel shells, nutshells found in Washington Square Park, pecan shell, walnut shell, sea urchin, seashells collected over the past 5 years, snail shell, limpet, barnacles, clay, rocks, salt, soil, spray painted leaf, pencil shavings, clothespins, paper clips, typewriter ribbon, colored pencil, colored transparency, film, paint, gouache, watercolor, aluminum, bronze, steel shavings, magnets, washers, zinc hardware, alligator clips, circuit switch, wire, string