Ultima V: Warriors of Destiny/Equipment

Amulets

 * Ankh: increases the probability that Lord British will appear at night to heal and level-up the Companions; the Avatar starts the game wearing one, and a second one can be found in a secret room in the village of Cove.
 * Spiked collar: increases defense.
 *  Amulet of turning: increases protection from some ranged attacks.

Rings

 * Ring of protection: increases defense.
 * Ring of regeneration: gradually restores health, but crumbles with prolonged use.
 * Ring of invisibility: makes wearer invisible, but crumbles with prolonged use.