I have found this video that in my opinion is beautiful. I have two twin children (a boy and a girl) and it has made me remember when they were born. It's like I see them again in the room that took me after the delivery.
The video is very nice because makes babies believe that they are still in the mother's womb and the hot water acts as amniotic fluid.
It is as if we were witnessing live how two babies are inside their mother's gut: