~The smoothie base is easily adaptable. You could try it with kale, but it does have a stronger flavor than spinach, so just take note. You can also switch up the fruit, but use light-colored fruits to keep the green color.
~Protein powder is totally optional. I love the collagen protein because it makes for a creamier smoothie.
~If you want a heavier smoothie, use avocado or yogurt. If not, leave it out.
~I didn't measure out the toppings, so just decorate your bowls as you see fit!