Well I figured since Alter has the heart locket thing, I'll give Zoltan a heart pendant thing.

Just did this quickly in Photoshop using shapes and layer effects cuz I'm lazy like that -w-

Zoltan got this as a present from Shippo shortly after they started going out. Unbeknownst to him it makes him more susceptible to things Shippo suggests or tells him to do (if Shippo holding the leash to Zoltan's collar wasn't good enough =P)

It has a secondary purpose as well. Alter has a copy of this one built into the back of his heart locket, he can use that to lose any weight he gains quicker than he normally would. But it builds up, and after so many times it'll release back into himself 100 fold. Until then, Zoltan can access any weight Alter lost through the pendant, or Shippo can access it as well or force Zoltan to gain with it for fun.