In a 16-ounce glass mason jar, combine the rolled oats, almond milk, Greek yogurt, maple syrup, vanilla extract, almond extract, and sea salt.
Vigorously stir the mixture with a spoon until the yogurt is fully integrated and no dry oat clumps remain.
Gently fold in 1/2 tablespoon of the rainbow sprinkles to prevent premature color bleeding.
Seal the jar with a tight-fitting lid and place in refrigeration at or below 40°F (4°C) for a minimum of 8 hours to allow for full hydration of the grains.
Remove from refrigeration, stir once to redistribute moisture, and garnish with the remaining 1/2 tablespoon of sprinkles before immediate consumption.