Spectacles of Awareness (3.5e Equipment)
From D&D Wiki
This item resembles a small pair of intricately made spectacles that are meant to be worn on the nose. When worn, it bestows upon the user a competence bonus to Spot checks equal to the spectacles' enhancement bonus.
Prereqs: Craft Wondrous Item, locate object. Caster level must be at least equal to the spectacles' enhancement bonus.
Cost to Create: 800 gp (+2), 3,200 gp (+4), 7,200 gp (+6), 12,800 gp (+8), 20,000 gp (+10).