Gauntlet of rust
(Dungeon Master's Guide v.3.5, page 257)
Price (Item Level): 11,500 gp (13th)
Body Slot: Hands
Caster Level: 7th
Aura: Moderate; (DC 18) transmutation
Activation: Standard (command)
Weight: 2 lb.
This single metal gauntlet looks rusted and pitted but is actually quite powerful.
Once per day, it can affect an object as with the rusting grasp spell. It also completely protects the wearer and her gear from rust (magical or otherwise), including the attack of a rust monster.
Prerequisites: Craft Wondrous Item, rusting grasp.
Cost to Create: 5,500 gp (plus 500 gp for base item), 440 XP, 11 days.