I'm working with a local organization to help them replace their regularly-used food service supplies with more earth-friendly alternatives. In my research, I've found numerous sites that offer biodegradable and compostable versions of plates, cutlery, and cups.The cold cups are made from PLA (Polylactic Acid), which is derived from corn sugar (dextrose) and although it looks just like plastic, it is completely biodegradeable. A company called NatureWorks, LLC manufactures PLA pellets, which are used to manufacture packaging and food containers as well as cups.
I ordered the cups to try out at home, and they look and feel just like regular plastic cups (use them only for cold liquid, though!) The cups can be recycled, thrown out, or commercially composted. Even in landfill, they will begin to decompose within a few months.
I've snooped around the Internet for these cups (and other utensils) and have found that the cost for PLA cups can be lower than those of traditional plastic cups that the organization I'm helping gets through its supplier. 2,000 7-oz. PLA cups cost around $71, compared to over $90 for the plastic versions. (Check the site to order your supply).
Earth-friendly and saving money? That's a no brainer!
