It would benefit from being sweetened for some, but I like it the way it is..
2/3 cup blueberries
1/2 cup 3%Yogurt; I'd rather full fat, but they didn't have any
A good handful(about 3 leaves depending on size)of finely chopped kale
1/4 cup water
1 cup unsweetened soy milk
1 smallish avocado, peeled and diced.
Blend until smooth.

Add other things as you like such as walnuts etc. This shake is not low calorie, but it is tasty. Sweeten if you have to with stevia, raw honey, etc.
I wonder about putting some citrus zest in there along with lemon juice. How about some raw avocado peel, healthy yeah maybe but tasty?