What I sometimes do because I always be happy when others do this for me is writting letters or sending beautiful cards because I guess that most people get mostly bills and no letters and cards (at least, since there are things like E- mails and messengers).
I find it so sad and frustrating to always open an empty letterbox or a letterbox full of bills

.
I guess that most people knows this problem and it is so easy to do something nice for someone if all you have to do is send a card for her/ him.