I wanted something that took up less space than a 5 gallon bucket, and was able to hold different varieties of mushrooms in the same stack. These pieces fit and interlock with each other rather tightly, and can allow for mycelium to spread to new containers allowing for continued growth.

For a basic one colony mushroom setup, print the following 1 Mycontainer or Half Mycontainer 1 CapRing 1 Cap Pac Top or Solid Cap Top 1 Cap Dripper 1 Isolator Basin or Bottom Basin or Bottom Basin Tall Humidity Caps as needed

This will make one section with a top and bottom to collect the runoff, you can stack more Mycontainers in between. If you want multiple colonies in the same stack, separate two or more Mycontainers with an isolator basin- each isolator will prevent mycelium from spreading up or down into other Mycontainers.

I keep mine in my shower so it's always sufficiently moist and I can basically set it and forget it. When the mushrooms stop flushing, just sterilize some hay and push it in with the old so the mycelium can colonize it and you'll get more flushes.

Some issues I noticed with the first design: Mycelium is hydrophobic, so if the mycelium has colonized most of its container there's a decent likelihood that water poured in will just spill out of the holes. I've found that just soaking the entire tower in a warm water basin for a few minutes is much better for hydration than the cap dripper.

The holes are too large and allow the straw to dry out in low humidity environments. One thing I'm working on, is a new model. My band aid fix for now has been a plug that can be shoved in to make the existing holes smaller and closed plugs in case even that is too much air flow- yet untested.

I have not noticed any mycelium eating through the PLA, but it could potentially occur as PLA is often made from corn.