Check it out, this is all you need.
I freeze the coffee in ice cube trays,
Fill my glass (or travel mug) with the coffee cubes
Top off with either almond milk or coconut milk beverage, add your sweetener of choice and you are done!
So my freezer in now filled with the coffee cubes so I am ready to go at a moments notice.
I bring it to work in my travel mug, which keeps it nice a cold and give it a few shakes every now and again. As the cubes begin to melt that break into tiny pieces just as if it were blended.