What is the nicest thing someone else has done for you?

I have no idea. I cant think of anything.

Save my life.

Recently, I went to a cash machine to find the previous occupant had left their card in the machine, so i ran after them and returned the card to him. He was so happy he gave me £10 as thanks, it made my day

well this one dude gave me five dollars .

My sister has always been there for me, and always been my best friend. :) She's been doing nice things for me ever since she was old enough to. :)