Combine the milk, maple syrup, vanilla, and salt in a jar or bowl. Stir until the sweetener is fully dissolved.
Add the chia seeds and stir well until all seeds are submerged and evenly distributed.
Let the mixture sit for 10 minutes, then stir again to break up any clumps that have started to form.
Cover tightly and refrigerate for at least 4 hours, ideally overnight (8 hours gives the best texture).
In the morning, stir once more. If the pudding is thicker than you'd like, stir in a splash of milk.
Top with fresh berries, granola, nuts, and a drizzle of honey. Eat directly from the jar or transfer to a bowl.