Hi Pritchre,
I agree with the other posts here, especially on the advantage of making simple “works-like” models for the backpack and card table concepts. I could see a simple model being really compelling for “Harmony,” even if it is less about ergonomics and handheld use than the other projects.
As a kid, I would have loved the music making tools that you included in Harmony (heck, I still would…)!
