Objects in Umineko no Naku Koro ni

Head ring
The head ring is a golden signet ring meant to symbolize headship of the Ushiromiya family. Up until the events of, the ring was worn by Kinzo Ushiromiya. The ring is also used as a wax stamp as a sort of signature for stationary created by the family head. The ring's stamp is what lends authenticity to Beatrice's letters.

Master keys
The master keys are a group of keys that can open virtually any door on Rokkenjima. The master keys are held only by servants and play an important role in several closed-room mysteries. The only doors that the master keys cannot unlock are those to the chapel on Rokkenjima as well as Kinzo's study.

Scorpion charm
The scorpion charms are bracelets given to Battler and Jessica Ushiromiya by Maria. Jessica later gives hers to Natsuhi. Maria believes the charms keep people safe from Beatrice as scorpions are said to have the power to ward off evil.

Winchester rifles
The Winchester rifles are four Winchester Model 1894 rifles owned by Kinzo Ushiromiya, all of which have been sawed off and outfitted with enlarged lever loops in order to resemble the Mare's Leg rifle from Wanted Dead or Alive. The rifles play an important part in the story of during the Rokkenjima massacre.

In the meta-world, the rifles are personified as the Chiester Sisters.