Now you can’t be too mad at your friends! The yeast makes beer a good compost activator, but only add enough liquid to keep your compost moist, not soggy.
If you don’t want to turn it into vinegar, add a small amount to your compost pile—it’s another good compost activator.
Tear the used coffee filters apart first, and make sure to remove any staples from your used tea bags before putting them in your compost.
Just don’t add paper materials that have grease on them, since they can attract varmints.
Human urine is high in nitrogen as well as phosphorus and potassium, and, well—it can be delivered in a form that’s perfect for assimilation.