(ABC News) -- You won't find Random Acts of Kindness Day on your calendar. It's an unofficial holiday that offers the perfect excuse to wear your big heart on your sleeve. A generous gesture doesn't even have to cost you pocket change because some deeds come in the form of a few compassionate words. So, get clicking to see people caught in the act of bringing a smile to someone's face.
1. Tis the Season
A wish for Christmas cards from a man who has Down Syndrome was heard all across the country.
2. It Started With a Latte
Alyssa O'Neill's parents honored their daughter's memory by buying Pumpkin Spice Lattes for strangers in a tribute that went viral.
3. The Cycle of Giving
A Phoenix police officer demonstrated the power of the pedal for one teenager.
4. To Protect and Serve
A NYC police officer aided a shoeless and homeless man on a frigid November night in Times Square.
5. The Friendly Skies
A businessman in seat 16C made one autistic girl's plane ride one to remember.
6. Support Our Troops
The girlfriend of a soldier deployed in Afghanistan left a Massachusetts Dunkin' Donuts with more than a cup of coffee.
7. A Slice of Kindness
Random Acts of Pizza is a way to help those less fortunate, one pie at a time.