There is no shortage of RaspberryPi cases. Plastic, wood, laser cut, hand made or 3D printed, all hobby shops are selling RaspberryPi cases.
Thinking about technology at a coffee shop, I had this simple idea, that a paper coffee cup would be a good fit for a RaspberryPi device.
The example in the image above shows the evolved device for our previous project: DIY Home Security System using Raspberry Pi
You can easily paint the coffee cup in any colour you like
To add some more stability to the RaspberryPi inside the coffee cup, we have used a foam board from dollar store.
After some cutting and trimming, the RaspberryPi board is stable inside the cup.
After the final cutting on the top to fit the usb and network connectors and on the side to fit the power and HDMI connectors, the result is a small computer you can use for coding, playing or a standalone device.