Find your tribe in a Sea of Creativity
DnD idea, when a metallic dragon alignment is evil they they become oxidized. Like a silver dragon would be a tarnished silver dragon, and a copper dragon would be a oxidized copper dragon. They would also get the traits of that type of metal when it's oxidized. The inverse can happen to chromatic dragons (their alignment is good) except they become more gem like. Red dragons could become a Ruby red dragon, blue dragons could be sapphire blue dragons, and so on so forth.
Pins! Specifically, two inside jokes for two friends. They make for a fun and special gift!