One of the nicest things a stranger has ever done for me, and I still wish I had the wherewithal to ask for the persons name - I was flabbergasted at the gesture and somehow I managed to stammer out a thank-you but not much else.

My team and me had just won 2nd place with a prestigious competition and decided to spend a chunk of the prize money right then and there: Wanted to get myself a nice backpack (Victorinox) but as I was a student at the time and the prize money would come much later, I came a significant amount of money short... This person just handed me, in cash, a hundred dollars. The backpack is now over 10 years old, and I still use that backpack daily with lots of pleasure, and only has minor scuff/wear and tear marks. It's been a fond memory to revisit, also because the memory is attached to my first time visiting Seattle (and Microsoft HQ). If the person that handed me that cash all those years ago reads this: Thank you so much, I would love to share what I've been up to.