Adapter Necklace (3.5e Equipment)
From D&D Wiki
Adapter Necklace: A black tentacle curved around like a neck brace, held together by a yellow eye. It allows the user to transform like an Adapter of the same level.
Moderate transmutation;CL 5; Craft Wondrous Item; Cost 2,500 gp, 3,000 xp; Weight: 2 lb lb.; Market Price: Not buyable.