Try to grow mycelium in fed by cardboard in a plastic container. There are many tutorials in Internet and many DIY videos and posts about how to grow mushrooms. Some useful likes were:
My first attempts were not successful and mycelium did not grow. Shiitake mushrooms were used.
EXPERIMENT / IDEA
The goal was to take some data from mycelium through Martin's Howse circuit for plants and mushroom amplification.
The idea was to let mycelium grow between the wires and colonize them so then we could get data out of them and translated into signs identified by humans, either sound or light.