Rigid Plastic #6 (Polystyrene) Put in Garbage/Landfill Items made with rigid plastic #6 belong in the garbage. A limited number of #6 plastic items can be taken to drop-off recycling facilities. Use the search engine at RecycleStuff.org for more information. Did You Know? What Items Are Made From Rigid Plastic #6? Items made from rigid plastic #6 include disposable plastic cups, lids for paper coffee cups, CD and DVD cases, clothes hangers and plastic utensils. Plastic in Our Bodies Styrene, a component of polystyrene, has been found in 100 percent of human fat tissue samples dating back to 1986. It is known to cause cancer in animals, and suspected to be both cancerous for humans as well.