In a medium bowl, combine the chia seeds, coconut milk, maple syrup, vanilla extract, and cinnamon. Whisk well to ensure the chia seeds are evenly distributed and not clumping together.
Allow the mixture to sit for about 10-15 minutes, then whisk again to break up any clumps of chia seeds that may have formed.
Cover the bowl with plastic wrap or transfer the mixture to mason jars for individual servings. Refrigerate overnight (or at least 4 hours) to allow the chia seeds to absorb the liquid and thicken.
In the morning, give the pudding a good stir to combine and check the consistency. If it's too thick, add a splash of milk to your desired thickness.
Serve in bowls or jars, topped with fresh fruit of your choice, a sprinkle of shredded coconut, and nuts or seeds if desired for added texture.
Notes
Feel free to customize the toppings with your favorite fruits and nuts.