I saw this group and it immediately made me think of something I did once in my hometown up in Vermont. A friend and I wanted to do some good through letters and flowers, so we wrote an inspirational word/quote on blank white cards and left them paired with a flower on random cars around town. It actually ended up making the front page of the newspaper as the "Randolph Mystery", and to this day no one knows it was me!
Is this something folks might be interested in doing? If not, I'm all up for holiday card-making!