So I got a lovely combination embroidery/sewing machine last spring. This is one of my most recent finished things. It is a reversible paladin/antipaladin belt favor. In Amtgard, a belt favor is just a neat thing to wear on your belt to symbolize something. This can be a person's personal heraldry or even the heraldry of a fighting company or household they belong to. In this case, it is to represent a pair of classes that can only be played by people who have been elevated to knighthood. (That in itself is a complicated process. I'm happy to talk about it, but is not the point of this post.)
Anyway, the phoenix is a reserved symbol in Amtgard. So not just anyone can wear one. The white is for the Paladin class and black for the AntiPaladin class.