A couple years ago we had a particularly bad snowfall. The plow has a nasty hate filled habit of dumping all its snow in my driveway. I had a drift at the end of my driveway about 4 feet high and 6 feet deep. Literally up to my chest. I had spent a solid hour just chipping away at it trying to get my car out and had made very little progress.
Right as I was about to give up in frustration, a man in a bobcat drove by. Moments later he turned around, came back, and asked "would you like me to clear that for you?" I told him that would be amazing. Took him a couple minutes and then he waved and drove off before I got a chance to offer him any money or even thank him.
I think about this guy pretty often, it's absolutely the random act of kindness in my life I have appreciated most.
A recent lesser snowfall for context: