Ring of The Hare (3.5e Equipment)
From D&D Wiki
Ring of The Hare: This ring of ivory is carved with running rabbits. The ring’s wearer gains a +2 competence bonus on Jump checks. He may withdraw from melee combat as a move action. The ring’s wearer does not receive a penalty to AC and may move at his normal speed when squeezing through narrow spaces. Also, he may use a displacement spell once per hour as a standard action.
Moderate transmutation and Illusion;CL 7; Forge Ring,polymorph, displacement; Market Price: 26,950gp