Would a kidney stone from a dragon be worth a lot?
Just came up with this question in a game. Would a dragons kidney stone be worth anything? Are there other creatures that would have kidney stones worth a lot?
Wasn't there some AD&D supplement that said dragons were conduits to the various elemental planes, and channelled their breath weapons straight from there? Maybe that was Grayhawk specific. I seem to remember it.
Then I would make the material from that plane. Ever burning coals, obsidian that is always hot to the touch, heat resistant chunks of brass. All as plane of fire example.