Since you DID ask, I created a small, affordable control panel PCB with push switches, LEDs and pots. It isn't any ground-breaking new technology, but it is something useful with the millions (literally) of Arduino's, Raspberry Pi and other microcontrollers out there. But there are very few cases, especially cases with machined front panels and a matching PCB for the user control. Now my last name isn't Sony, and I don't live in China, but I was able to keep the price low enough by buying parts and the PCB's in bulk, so you can get one ready-made and tested for a lot less than if you were to create your own, and the resulting control panels are 100% professional-looking. I have several more spin-off ideas.