Been following paleo-ish approach for awhile now. Jay Robb's protein is the best I've found if you want to stay somewhat strict. I generally blend a scoop of the chocolate whey or egg white protein w/ unsweetened almond milk and organic heavy whole cream. Sometimes add a scoop of almond or cashew butter and chunks of 100% unsweetened cocoa.
If I want to up the carbs, I add SoDelicious brand Vanilla Coconut milk and hazelnut coconut cream.
You can also blend it w/ Zico coconut water. They offer Pomegranate and Lemon flavored versions, that mix well w/ fruit and vanilla or unflavored protein.
Most often I fill a Magic Bullet cup halfway with the milk, protein, and other ingredients, blend, fill the rest with ice then blend again. Grab a spoon and you'll never go back to regular ice cream.