Ideas on making a halo costume?

This guy made one in 3 days and like i think it was 26 dollars (dont quote me on that), but it looked sickkk a href="http://www.hlfallout.net/forums/topic/60746-making-mjolnir-armor/" rel="nofollow"http://www.hlfallout.net/forums/topic/60…/a it has a tutorial how to make it out of cardboard so yea man check it out