Mycology is fun! you can grow some of the more rarer mushrooms in a terrarium (eating ones I mean), the only thing that you’ll find is once they start growing, quite frankly they don’t stop and you end up with bags of dried, pickled whatever’d mushrooms. I used to have a mushroom box under my sink at my old appt and would dry the mushrooms and swap them with market stall holders at the local market for stuff.
Actually we’re coming up to mushroom season in Australia for the rarer stuff and the Polish Community have these big Mycology treks which I’m dying to go on.
Can’t encourage you enough in this. They’re cheap, healthy, and taste great if you know how to use them properly.

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