A ring of silver enchanted such that if any in the wearer's presence intend to harm them it would grow warm. Unfortunately it's properties are wasted if in place of politics where it is consistently warm.
A culture has it forbidden to say their rulers name under penalty of death. Anybody in power must be referred to as their title. Comes from the fact that the rule or position can be taken over by anybody from any level in society. To use the title elevates them or brings them down from whatever level they were originally at before they took the position. Respect and authority comes from the position, not from previous life.