I'll start-
When I had my first baby I used to avoid going to my local shop because the door was really heavy and I always struggled to push the pram through it.
One night I was walking with the pram toward the big heavy door, then a little girl got out of a car in the car park and she ran over and opened the door for me. Then she ran back to the car! She wasn't close either, she came all the way Iver just for me.
Beautifully kind little girl.
Another time I was walking with my baby and my toddler in the rain, it came down heavy and we were all soaked (except baby with the rain cover)
someone stopped their car and offered me their umbrella. They couldn't tell because my face was soaked but I shed a tear. Wonderful lady.
Another time it was quite the opposite- it was a boiling hot summers day and I was walking with my then about 1 year old in the pram again. he was crying because it was hot. We walked past a hand car wash place and the man washing the car sprayed the hose into the air and gave us a lovely cooling down.
I'm sure I have many more but those are the ones I remember most.