What magic item did hades have?

Hades, the Greek god of the underworld, possessed a magical item known as the Helm of Darkness or the Cap of Invisibility. This powerful helmet granted him the ability to become invisible, allowing him to move unseen among mortals and gods alike. It was often depicted as a symbol of his dominion over the dead and the unseen realms. The helm is sometimes associated with the concept of fear and the unknown, further enhancing Hades' formidable presence in mythology.