A normal single use coffee cup has a thin polyethylene lining to make it water resistant. They are not biodegradable. Some researchers in the Philippines have come up with a single use coffee cup made from pineapple leaves. They don't use any plastic at all and called their product "Pinyapel" meaning pineapple and paper. After you finished your coffee it can be put in the compost. A great intervention- even greater would be if people started to use their reusable cups more.