I bought a new hat about 5 years ago. In the first year, I had a young woman tell me she liked my hat (random passerby in a supermarket), but she giggled as she said it. I spent the next long while wondering if she was being genuine and she was just nervous about saying something, or if she was making fun of me and had said it ironically. (She was with someone else, so that seemed to make the latter more likely).
A few months ago, an elderly woman at the pharmacy told me she liked my hat, and that one I knew was genuine.
I haven't left the house without that hat since. Still riding that high, too.
In 2011, I worked at a company that was near a small local sandwich shop, and I'd go in there frequently for lunch. At one point, when I got back to the office, I found that they clerks had written in sharpie on the bag something to the effect of, "You're always so bright and cheery when you come in here, we love your attitude!" Made my year. I still have that bag in a box in the closet.