In a blender, add milk, dates (or coconut sugar/maple syrup), chia seeds, cocoa, salt, and vanilla. Blend (starting on low speed and then working up to high speed) for a minute or more (depending on blender), until the seeds are fully pulverized. Taste, and if you’d like it sweeter, add another few dates or another tablespoon of maple syrup (or coconut sugar). If you'd like a thinner pudding, add another drop of milk and blend again (it will thicken a little more as it chills). Transfer mixture to a large bowl/dish, stir in coconut and chocolate chips, and refrigerate until chilled, about 1/2 hour or more (it will thicken more with chilling, but really can be eaten straight away - especially if using the dates as they also thicken the mixture). Serve, sprinkling with more coconut, and topping with fresh berries or other fruit if desired. Serves 3.