Third shift at a gas station in rural Ohio, winter of 2019. There's a regular who comes in every night at 2:15 AM and buys a single banana and a black coffee. Never says a word beyond "evening." I have no idea where he comes from or where he goes. There's nothing open for miles.
One night the power went out during a storm and I was standing behind the counter with a flashlight. He walked in at exactly 2:15, looked at the dark store, looked at me, put $1.50 on the counter, took his banana and coffee, and walked out. The register wasn't working so I just pocketed the $1.50 and wrote it up as a loss.
I think about that man once a week. I never learned his name.