Middletextures with transparent pixels, intersecting with each other. A few circles depicting the candle-holding rings, and an * of chandelier tresses/hanging cables to intersect the rings, and you can get a pretty good result. Line up some thing chains to hang it from the ceiling and use an invisible FOF or two for collision, and you can place it just about anywhere!Why yes, a chandelier would fit in nicely... although I have no idea how that would be made in SRB2.
It goes without saying that you have to make the textures specifically for the geometry you come up with, though. Vanilla SRB2 doesn't have anything you can just slot in for that.