Bird's nest #fungus on a rotting stick, 9 October 2021, Petersham, #Massachusetts. These are around 1/4 inch in diameter. I first encountered the Nidulariaceae (from the Latin "nidulus" for "small nest") around a year or so ago and they never cease to amaze me.
I love that these inky caps keep popping up by my house every year. They're the most interesting fungus (to me at least). Edible when young (unless you're me and can't stand eating mushrooms) and as they start to dissolve, the inky goo they secrete can be used to write with (among other uses for ink).
I hope the mycelium network for these little fellas don't mind me adding wine caps to the garden next year lol