This is very interesting theme! I want to say few things involving folk beliefs and old traditions of people here in south eastern Europe!
Here on Balkan, there is belief that when person is exhaling their last breath, that he makes, well lets say, a vortex, that pulls life essence into it, and belief holds that small unprotected or unbaptized children, weak and sick people who are in vicinity of dying person can come into grave danger if they lament or cry in that moment.
There is also tradition to pass a blessing, or gift from god, or any kind of supernatural power to your children when you die, doing it on your dying bed, or simply when you die you pass it onto them...
And for the end, there is also belief that, if person who just died was a Witch, or energical vampire, you must cover all mirrors in that house.
I hope you enjoyed reading this!