Personally, I like:
Turkish coffee, I received a cezve as a gift, Lots of crema (they don’t call it that, but it’s very frothy).
Coffee soda. Double shot espresso in a glass of ice, add soda water to taste. Great when it’s hot out.
Coffee milk. Same double shot in a glass of milk, with lots of sugar. Reminds me of my childhood. The official state drink of Rhode Island.
Put a dash or two of long pepper with the coffee grinds in my aeropress.
Gives it a nice aroma and subtle change in taste. I tried putting the pepper directly into my cup at first but the grounds would settle at the bottom and be weird to drink at the last sip (kinda like turkish coffee or moka/vietnamese coffee with the fine grinds at the end).
My daily go-to is an iced breve latte. Two shots of espresso with half-and-half in place of the milk (I usually do half whole milk, the rest half and half to make it lighter/cheaper).
The nutrients you have definitely affect the way you think, and you seem to be thinking quite reasonably to me.