The Joy Of Selfless Giving

I have the most awesome child in the world. First of all I would like to preface this little story with the fact that Michael keeps some of the cash he gets from the Tooth Fairy and other ancillary holiday cards in his underwear drawer! (original, eh!) He didn't have a boatload of money in there because the majority of it is deposited in his bank account. However, I think he had around 20 dollars in 5's and 1's.
So, unbeknownst to me a memo was sent home from school regarding a family whose father had brain surgery and was having problems covering their medical expenses. In order to encourage kids to bring a small donation, the memo stated 'if you bring $1, you could wear a hat to school on the designated day.'
Well, the designated day was last week and I read the memo yesterday! Go figure....So I asked Michael "Did you wear a hat on this day?" I figured the answer would be no since he didn't ask Mike or I for any money. He told me he did wear a hat on that day. "How did you get away with that since you didn't actually donate $1?" I inquired.
"I did donate money", he stated. "Only I didn't give just a dollar, I figured if one dollar would help some then five dollars would help more."
Hello, this is my child! Taking care of business without pumping his parents for cash. I am so proud of him, I think I could explode with pride (Yes, I know being too proud is bad) but who could not be beaming from this. A nine year old doing all of this by himself?!? I just don't know what else to say.