She sat in the pouring rain with her dogs, waiting for her turn. She told us that she was homeless and willing to wait as long as it took to get her dogs neutered. It was a miserable day, but her commitment and stoicism humbled all of us to the quick.
Then this thank you note showed up at the end of the day. She couldn't donate, but she wanted us to know how grateful she was and to make sure it was read by the whole team. Priceless.