I didn't realize that when you order a liquid culture of mushroom spores online that they will mail you a literal syringe
My compost piles have now been inoculated with Almond mushroom (Agaricus blazei) and Wine Caps (Stropharia rugosoannulata)!
They won't fruit until the fall, but I'll check in a couple of weeks for mycellium growth to see if my dreams of Mushroom Composting are coming true
[CW non-medical syringe]