Our theme is the candy cane. When you ask my kids what Christmas is about, the first thing that they say is who it is about, Jesus. The candy cane represents Jesus, not only in the "J" shape but a few other things that are beautifully described on this site.
Our fruit side is raspberries, blueberries and apples.
Our vegetable side is canned green beans.
Finally, our dairy/dessert is vanilla yogurt. We have a small container filled with candy cane sprinkles for the girls to add to their yogurt at school.