Last month, six of the largest school districts in the U.S. – including schools in New York City – decided to switch away from polystyrene trays to earth-friendly compostable plates. The new eco-friendly plates have landed in many city schools, and to celebrate, students held a massive celebration. On June 22, students threw a show in Union Square with larger than life puppets made out of the polystyrene trays from the cafeterias.