[_spduchamp]

I've purchased a low cost passive matrix mixer from Tindie, so there definitely seems to be a marketplace for these sorts of bespoke hardware. https://www.tindie.com/products/ruccielectronics/4x4-matrix-...

I find that I have no shortage of ideas of hardware I'd like to build, but I'll never be able to make everything, so I start building simple things that I can execute with my limited resources and abilities. Just starting, and finishing little projects and seeing the results has been very satisfying.

I recommend just build something. Anything. Make it simple and finish it. Then play with the results, and learn and repeat. With this, over the past 4 years, I've been able to turn daydreaming in the bathtub into a new musical instrument (Electroduochord), and 3 albums made with that instrument. I've learned so much along the way and each step seems to open a new door to possibilities. None of that would have happened if I didn't just start building and experimenting.