“ A golden skull contains the spirit of a person who has been magically entrapped in an ethereal undead status by an ancient ritual. The person was boiled alive in a golden mixture until nothing remained of him except the bones, now covered by a golden layer. Whoever has these golden bones, controls the spirit and can command it. It can assault the living with wind and storm. Manipulate objects and communicate with the living. (Inspired by Anne Rice, Servant of the Bones)”
“ Pirates' many bejeweled rings and piercings actually had a practical purpose - when the pirate or sailor died, the rings could be taken off as payment for a proper burial, saving him from a watery grave. This could be tied into regional culture, or made into a quest (The Pirate's Lost Rings, etc.). Also gives treasure-seeking divers another thing to look for besides crusty old chests.”
“ Nearly every primitive culture has had rituals and celebrations to guarantee the proper passage of the seasons and to ensure the fertility of crops and animals. Oversight of these ceremonies was generally the provenance of local kings or priests.
Suppose that the adventurers dispatch one of these fellows. The local peasants may become hysterical, fearing famine and death will stalk the land. Alternatively, they may want one of the new heroes to become king. For a while, this can be a good thing, but the first time that the crops fail, the superstitious locals will want to sacrifice their new leader.”