This design is based on the work by DaveM. I created a new design for the case that is heavily inspired by Dave's design but tailored to my tastes. The screws for the faceplate are now hidden and the case is more minimalistic. Photos show keyboard key caps installed but I also designed 3D printable key caps that are Cherry MX compatible. Instruction for wiring the electronics and programming the Arduino can be found at Dave's website.

Original: https://www.printables.com/model/157035-stream-cheap-mini-macro-keyboard

Website: https://www.partsnotincluded.com/diy-stream-deck-mini-macro-keyboard/

I have also saved a PDF of the website just in case it becomes inaccessible.