Here's an easy one: I can remember to bring a ceramic cup with me when I get coffee out! Coffee is one of my small indulgences. Every day at home, naturally! If you are like me, several times a week you also find yourself with a disposable cup in hand, enjoying a java out in the world. Take a second to picture the pile those cups would make at the end of the year! Disposable coffee cups aren’t good candidates for recycling, because they are either Styrofoam or lined with a thin layer of plastic.
Think about it: after only 18 uses, a ceramic mug is gentler on the environment than paper, in terms of energy consumption, water, and waste. Everything after that is basically an environmental freebie! Plastic breaks even with paper after only 8 uses, but plastic will get brittle &; crack much, MUCH sooner than stoneware - a stoneware mug's useful life is basically forever. All the forever we have, anyway.
You probably already have a stoneware mug - I know my readers are mostly potters! - but just in case, here's a link to my new ones online.