That's good for you and your child, that means you have to teach and introduce bitcoin to your child. But kids usually just want to have fun and a pedestal to learn. So you should not force them to know and do what you do in bitcoin. Let them do what they want. If you want to keep bitcoin for your child but they do not want to know, you can entrust the bitcoin you keep to your relatives and give it to him to give it to your son someday.
You can really save bitcoins for your children since all you need to do is invest and hold it for a very long time if you did not want to work on bounty campaigns or trade. Most of the wife's can really work at home for bounty campaigns and earn a lot of money while take care of their children.