In France, the second sunday after Christmas, we celebrate Epiphany, which is supposed to be the visit from the Magi to Jesus. But for all children and bon vivants, it's especially time to eat what we call "la galette des rois" (kings's cake). It's made of puff pastry with almond cream filling. One or two lucky charms we call "feves" (beans) are hidden in it. If you find one in your slice, you become the king (or queen). If there is only one lucky charm, you can choose your queen (or king). The king and the queen have to wear a beautiful golden crown (made of cardboard).
A lot of people collect those "feves", and even I do. It's not that I have a passion for it, but I just started to keep them when I was a child, and never stopped. When I was young, the "feve" were made of plastic, and they were a few differents (most of them were kings, queens or baby Jesus). Now, they're usually made of ceramic and can even be gilded. And you can find so many different charms such as Christmas crib figures, animals, tea pots, jewels, famous pieces of art, or famous characters (Looney Toons, Disney, Asterix, etc). Of course, I prefer those figuring birds (or cats).
Here is a picture of a small part of my collection.