Have any of you sculpted your own rocks or trees to go into your Chams cage? I'm into sculpting and want to sculpt some stuff for my cage. I just want to know what types of materials are safe to use. (ex. types of clay, plaster, paint, etc.) I was thinking of sculpting my own cliffs and ledges, then cast them in plastic. Plastic would be my best bet that the material is safe. But I still need to know about what paints to use.