_picoRack is basically a challenge I made myself when I realized how many interesting, tiny modules there are. So I challenged myself to use nothing larger than 4 HP. Being that I'm also a beginner, I also used this as time to look into brands other than the most well known. This combination of modules should, emphasis on *should*, provide just about everything possibly required of even the largest racks. Getting to all of the individual functions, however, might be a little more difficult.
Due to the space limitations, modules were chosen based on how many functions they could feasibly provide. Hence, the pair of Distings at the end. This does mean that some functions are buried beyond the idea of knob-per-function, but again, remaining within the space limitation was more important. Obviously, this could be made even smaller by dropping at least one of those, as well as the Ivan. Finally, I still had 2 HP left, so I decided to fill them with memes, a.k.a. Cats.
The build was fun. Practical, probably not. I'm not familiar with the quality of each brand that I used, so I wouldn't hesitate to replace many of them with something from 2hp, 4ms, or Erica. This would likely increase the size a tad, but I wouldn't want to use a case larger than an Intellijel Palette. I'm thinking that is going to be my next experimental build, actually.