I'm looking on the comments and besides a couple exceptions, I'm not seeing anything beyond weed and drink. So here's mine.

Alcohol: after a few beers I'll spend more time jamming on a piano vst not trying to make a damn thing. I wish I could figure out to pull the midi playback out from where ever it saves because if I hit record I'm not as comfortable, it's peculiar.

Weed: meh. It doesn't do much for me when I produce tbh.

MDMA: it's pretty cool. Stayed up all night making really great base tracks that I built upon sober. 10/10 would sweat again

Shrooms: I don't even know what the duck was in my head. I made glitchy ambient honky noises.

Now, for the harder stuff,

Lean: never finished something as I dozed partial way through. But had some fun with slow saw leads.

Coke: mostly normal tracks. Teeth hurt a little from the sugar and the fact I don't drink soda too often.

Cocaine: fast tracks. Stayed up all night. Basically made 3 copies of Sandstorm which is amazing on Ye.

Adderall: someone else said this and they hit it right on the head. Everything is perfectly arranged. Too perfect as there is zero creativity in me on adderall. Mixing makes everything sound loud and harsh. Good for base tracks or generic trap beats.

Morphine: (this is from another perspective that isn't mine) Holy Christ. Holy. Christ. There is nothing you can't make on morphine. You can conquer the world and eviscerate your enemies if your tolerance didn't build so ridiculously quick.

Percocets/Vicodin : lovely pretty tracks. You make fairly chill stuff

Heroin: (this is from another perspective that isn't mine) amazing feeling. Amazing tracks 10/10 wished they could stop themselves from ever doing it because they can't stop now.