Small reusable coffee cup

I got a Breville Barista Express six months ago and now coffee shop cappuccinos will never be as good as homemade. I wanted to be able to take my cappuccino to go on mornings I drive to work, but my travel mug is too big and mixes my drink when I pour it in. This 8oz reusable coffee cup by KeepCup ($15) fits under the portafilter spouts and fits in my car cup holder. It serves only one purpose, but it does it perfectly. — CD