Looking for a Hand to Bite Into

⚠️Content Warning: A Harmful Tic or Stim is mentioned. I want to add this, just in case. I have a question. I have a, I believe, stim or tic (I am still confused on how to tell the difference.) where I bite at my hand. I have tried necklaces that are meant to be bit, but most of the time my brain makes me go to my hand before I can think about the necklace being on. There were times where trying the necklace was not enough, and I bit my hand still. One of my doctors told me that maybe I should try something that feels like I am biting into a hand. My question is, what in the world do I look for? My hand is pretty bony and slightly squishy, if that helps? She was saying the size and texture, but I really have no idea what to try to Google. Sure there are fake hand decorations for Halloween and such, but I do not think I can bite into that the same. I know this may sound like a really bad joke, but I am being honest. I really have no idea how to find anything like what she suggested.