In a large mixing bowl, combine oats, milk, yogurt, maple syrup, and vanilla extract. Stir until well combined.
Add ginger, cinnamon, nutmeg, and cloves to the mixture. Stir thoroughly to ensure spices are evenly distributed.
Divide the mixture evenly among six mason jars or airtight containers (about ¾ cup each).
Cover jars tightly and refrigerate for at least 8 hours or up to 3 days.
On Christmas morning, give each jar a quick stir, add your favorite toppings, and serve cold or warmed in the microwave for 45-60 seconds.