It is best to send a story. As an elder, you must have experienced more things than him. It is interesting and long-term to tell him the experience in the form of stories with what you have experienced personally (that is, the losses you suffered before). It is most appropriate to send an educational book at this time. (provided that he loves reading, not the "wild child" type)

If he has any hobbies, take them. For example, he wants to be a painter, but everyone else is against it. You can send painting tools, textbooks and celebrity success stories. )

If he is already, I mean, he can take care of himself, and basically he doesn't lack anything. You can give him anything you want. Powerful thoughts are better than matter. I hope he can write well and send a brush copybook, and I hope he can learn well and send it to the computer. ).