A mandala is a traditional art form of Tibetan Buddhist monks. They spend days or weeks sprinkling colored sand into a gorgeous geometric design. Then, to symbolize the impermanence of all things, the sand is all swept away and poured into a body of running water.
In a variation on this theme, artist Phil Hansen has created a Jimi Hendrix sculpture out of 7,000 matches and set it on fire.
(Okay, this might not have anything to do with religion. But it is still badass.)