I had a dream about a standalone NLC instrument with 4 voices this morning.
Two “drum” voices (a high and a low tone) and two “melodic” voices. It was a mounted on a single larger white and gold PCB - maybe 12 inches by 24? Was still DIY-able, obviously.
I specifically remember “playing” the mixer, which had a kind of CP3-thing going on where you could push the voices over top one another. Each channel had a pair of red LED’s which, I’m not sure exactly what they were tracking. Maybe they were CV mixing as well? I dunno. It was a dream! 
It sounded very noisy, but also great. I think it had some kind of built in touch sequencer, but I don’t remember well enough about any details. The mixer and sounds were the only things that stuck.