Oregon has stores now that sell everything you need to grow your own. Pre-sterilized substrate bags with injection ports and many different strains of psychedelic mushrooms sold in spore syringes. You basically just stick it in a closet, inject it and it will just do its thing - in a few weeks you will have pounds of mushrooms.

There are more than one of these stores in my city - wouldn’t be surprised if it was happening in many other cities on the west coast as well.