Follow me on this: Take a mold of a Vader figure in repose and then cast him in one solid piece of steel. I'm not a metalurgist (and can't even spell it) but it needs to be black, naturally.
Anyhow, the rest of the playset is the "wooden" funeral pyre, also cast in non-flammable alloy. Little bunson burner nozzles leading to a propane tank and you're good to go for hours of cremation fun!
Really, I'm serious! No, really!