Okay so my idea kinda is like this to grow shrooms.
I was thinking that there could be spore clouds that you could run and jump through to collect them.. maybe with a jar kinda like firefly whistling.. maybe with a net and placed in a special tool bag. Either ways , you could then grow them on say rotting logs or i was thinking that when an egg plant has empty branches you could spread the shroom spore to make that branch convert over into a shroom branch that would only last until the mushshroom was harvested. Along with, if you kept emptying the eggs from the branches until all branches had been converted over into a mushroom then the whole plant would become a Mushroom Bush.
Also, since the egg plant gives away my intended area's .. caves .. underground .. swamp basements i was thinking maybe add a new shroom that had qualities of other known drugs.
Of course you can also tell i dont mind my idea being a jumping board for other ideas.. i have read the one one about getting it from bat guano dont know if there were other ones.. so sorry in advance if this has been said before.
Cheers !
Edit: forget to mention that the idea for converting the egg plants comes basically the mushrooms are a living fungi... most likely aggressive :D