Summer is coming and I have a giant bone-shaped ice cube tray which makes bones Lainey loves to chew. You can make it a thin or thick bone depending upon how much you fill it. She gets one a night made with only water as it is chewed indoors. If you are giving the ice bone outdoors, you could use any liquid (broth etc.) Just search for "IceDog from Canada" and you should find the ice cube tray to buy.