pour half of the milk and all the chocolate chips into a microwaveable glass measuring cup. Microwave on high 20 seconds at a time, stirring after ever interval until the chocolate is melted and well combined with the milk. refrigerate until cold. pour mixture into a blender with the remaining milk and cinnamon. add 2-4 cups of ice. blend on high for 60 seconds to 2 minutes. pout into travel mugs with a straw and saddle up your tauntaun.