Ghost Ring (3.5e Equipment)
From D&D Wiki
Ghost Ring: This crystal ring feels cold to the touch. The ring does nothing to help the wearer in life, but if the character dies, the soul separates from the body as normal and then is transported to the Ethereal Plane as a ghost.
Moderate Necromancy;CL 10; Forge Ring, Contingency, Animate Dead; Market Price: 26,950gp