Light: The biggest lightbuld eva!!!
heh... now let's get serius.
dimensional ring or something (like a thing that allows non
creatures to travel to other dimensions)
liquid oxygen
dark shine (total oposite of a sun. Like a black hole, just it only sucks in light)
dead person (lol) or cemetary like huge one with the undead armies inside just waiting to be released
a rock (lolz) or a stone (lulz) or dirt (rofl) or those heads that are on easter island (freaky!!!)
antimatter cube (that would twist the reality! hot to cold, solid to liquid, plants to explosions!)
greek fire (more water you poar on it, the more it burns!!!)
a peice of a pulsar
some sort of a giant plant or something
localized sun
obelisk
gills alcohol or something it's the last on the list, and i've been wery resourcefull today. Went to the well one too many time.