I loved your post, I am basically doing the same with my son but I have been saving them in a cold wallet for 5 years, when he is 18 years old he will have a good base to face the hard life that will be waiting for him outside home. I don't want him to go through the same financial problems as his mother and grandparents, but I will also teach him to use his BTCs wisely and intelligently. Greetings, I don't know you but I wish the best for you and your nephews.