The highlight of my day was when I picked up some guy's keys. He was walking in front of me on the sidewalk in Toronto and there were holes in the pockets of his coat and his keys fell out and landed right in front of me.
Why was this a highlight? Because he was so grateful. I was his saviour. WHen I handed him the keys he burst into a tarnished-gold tooth grin and exclaimed in an accent which could have come from any one of a dozen european countries: "Thank you SO much Girlie. I don't know what I would have done if you weren't there."
I told him you're welcome and it was no problem. (and it wasn't - can you imagine anyone who would have just kicked the keys aside and kept on going?)
He proceded to elaborate on how, had I not handed himn his keys, he wouldn't have been able to get into his house and, because of a bad back, he couldn't walk very far.
Glad I could help.