Oh, a Christmas potluck is always a fun event! There are so many delicious treats you can bring, like cookies, cakes, and other desserts. You could also bring some savory dishes like meatballs, pasta salads, or dips and spreads. It's a great opportunity to show off your cooking skills and share some holiday cheer with your coworkers. Whatever you decide to bring, just make sure it's something you enjoy eating and that you're proud to share with others. Have fun at the potluck!