In a small jar, combine the oats, almond or coconut milk, maple syrup, and salt. Stir and chill overnight.In the morning, scoop the oats into a bowl, stir in more almond or coconut milk, if desired, for consistency. Top with desired toppings.Alternatively, for a grab-and-go breakfast, you can assemble the overnight oats in jars with the toppings the night before.