Most people only knows about the fruit body, that cap & stem. But the largest living organism on Earth is actually a humongous fungus: Armillaria ostoyae. It covers 2,385 acres (almost 4 square miles) of the Malheur National Forest in Oregon.
My favorite is King Oyster. Vegan burgers that are made from high quality mushroom & good seasoning can pass off as meat burgers.
The research & tinkering lets me enjoy the practical aspects of science. The magic mushroom communities are full of creative & innovative folks who share their Tek (slang for Techniques). Through the experiments, I learnt ways to modify cheap commodity stuff & integrate into existing but proven Teks.