Robe of blending
(Dungeon Master's Guide v.3.5, page 265)
Price (Item Level): 30,000 gp (16th)
Body Slot: Body
Caster Level: 10th
Aura: Moderate; (DC 20) illusion
Activation: Standard (command)
Weight: 1 lb.
When this robe is put on, the wearer intuitively knows that the garment has very special properties. A robe of blending enables its wearer to appear to be part of his surroundings. This allows him a +10 competence bonus on Hide checks. The wearer can adopt the appearance of another creature, as with the disguise self spell, at will. All creatures acquainted with and friendly to the wearer see him normally.
Prerequisites: Craft Wondrous Item, disguise self.
Cost to Create: 15,000 gp, 1200 XP, 30 days.