Our 4 yr old ds brought home a model today that includes a used shotgun cartridge.
My dp thinks it is not ok for him to be crafting with what is a basically a weapon and is also concerned that it might have unsafe chemical residue on it.
I am not so sure. I can understand his points but also think if our son doesn't know what it is, then basically it's just a good small cylinder that creates interesting craft model possibilities. What are your thoughts?