A little composting can go a long way. Shannon Schaefer, production secretary for A Serious Man took charge of the sustainability issues on the set and ended up diverting 11 tons of waste from the landfill! Part of this was through the use of water coolers and reusable containers instead of plastic or Styrofoam cups, but most of it was through the composting of food waste.
From the article:
Surprisingly, 74 percent of the refuse went to compost, including virtually everything from catering and craft services - fruits, vegetables, meat, bones, dairy, paper and corn eating utensils (plates, napkins, cups, forks, knives). “Basically anything that was once an animal or a plant is now compost,” Schaefer said.
Good thing the UNC cafeteria has embraced this principle long ago!