Mix 1/2 cup rolled oats, 1 tablespoon ground flaxseed, 2/3 cup milk, 1/3 cup plain yogurt, 2 teaspoons brown sugar and a pinch each of salt and cinnamon in a small jar. Add 1/4 cup crushed freeze-dried blueberries and 1/2 chopped banana. Cover and refrigerate overnight. Top with fresh or frozen berries.