Looking for stories of anonymous donors

Hi!
I'm a stanford student collecting stories of anonymous donors and acts of goodwill.
I'm writing a paper at the moment, but so far the stories I've gotten have been really uplifting-- If I get enough, I might try to put them together in a little anthology of goodwill.

If you have ever been an anonymous donor, or if you have ever done something really nice (it can be small) without seeking any sort of recognition, please send me your stories!
Also, if you have stories of other people who you have observed doing something altruistic while they thought no one was looking, I'd love to hear those as well!
Finally, if you have been the recipient of anonymous goodwill, I'd love to hear the effect it had on you.

I'm also looking to do some phone-interviews, so if you're interested, mention that as well.
Any personal information you give me will be protected, and anonymity will be respected.
Thanks so much!

-Elise