Ring of chameleon power
(Dungeon Master's Guide v.3.5, page 230)
Price (Item Level): 12,700 gp (13th)
Body Slot: Ring
Caster Level: 3th
Aura: Faint; (DC 16) illusion
Activation: Free and standard (command)
Weight: —
As a free action, the wearer of this ring can gain the ability to magically blend in with the surroundings. This provides a +10 competence bonus on her Hide checks. As a standard action, she can also command the ring to utilize the spell disguise self as often as she wants.
Prerequisites: Forge Ring, disguise self, invisibility.
Cost to Create: 6,000 gp (plus 700 gp for base item), 480 XP, 12 days.