Does your family or group of friends have an annual tradition of some sort? maybe something that you do every Christmas or Easter, or maybe it's a less well known date and practice.
I'll start....
Well, since my family is rather weird, our tradition is that every Christmas we have to watch the movie Elf (the one that starred Will Ferell) since me and my sister loved it when we were younger, constantly quoting lines from it like "SAAAANNNTAAAAAAA.....I know him, I know him" xD