Remove and set aside 2 tablespoons of the coconut milk to use for the topping.
Place remainder in blender or food processor with frozen avocado, cacao powder, maple syrup (or sweetener of choice), vanilla, and pinch sea salt.
Blend until smooth, stopping to scrape down sides, as needed. (Depending on the blender, you may need to tamp down the ingredients as well.) The texture will be like something between ice cream and pudding.
Divide the smoothie into two bowls and top with berries.
Drizzle with reserved coconut milk.
Sprinkle with toppings and serve immediately.
If needed, 2 medium bananas can be substituted for the avocado.