Here's mine:
last week I operated a flight from FRA to BAH and was sick. I had temperature, ear infection and generally felt bad but didn't want to stay in FRA. But there was a gay couple from Finland in economy, who were really lovely. They asked me if everything was ok and told me how sorry they felt for me. They continued telling me how nice, beautiful and professional I was for the rest of the flight. That really made my day. I always appreciate when the pax are polite, can say please and thank you and don't treat us like we're their maids or something..