I have seen that when adults and children play music together it is a wonderful bonding experience. I saw this in Ireland at open music sessions where grandchildren played with their grandparents. I see it here too with Yo Yo Ma and his son, playing together. If you can share such things with your own kids. If you don't play an instrument, try singing together. In Ireland I heard the phrase, "Where there is Song, there is no wrong."
The boy on the guitar is the grandson of the man he is looking at, in the blue sweater. The grandfather is singing and his grandson accompanying him.