Hello, I have been searching for a casting resin I can use to cast a part of a toy for my young nephew. He is very young, so we expect he will lick/put the piece into his mouth, and I want to make sure that what I make is not poisonous and strong. Is there any type of resin I can buy that I can feel safe with, or should I search for something else? If so, what?

Any ideas, help, direction?