There are definitely a lot, possibly infinite. But one thing that definitely warms my heart at the most random time is how some people would greet me with a smile when we pass by each other, even if we are not necessarily that close. Or when people say hi to simply check up on me or how am I doing at the most random times, even if they initially meant it as a mere conversation starter after not talking for quite a while, but it’s still a heartwarming thing to do and I appreciate it! ♡