Chaos Magick is an eclectic mix of Magickal traditions.  Techniques from Witchcraft, the Qaballah, Enochian, and others are used as seen fit.  Chaos Magick is based on the fact that anything can be a symbol.  It isn't uncommon to see a group of Chaos Magickians saying an invocation to Bugs Bunny, to invoke the Trickster God.  Where Ceremonial Magick relies on solemnity and seriousness, Chaos Magick relies on laughter and emotion, when Magick is fun!