I think the best gift parents can give to their children is： 1. A stable and healthy environment to grow up in, because everyone is created (influenced/affected) by the environment around them. 2. To become a supporter in the background/behind the scenes, and let children learn how to make their own decisions.

I think the best gift parents can give to their children is： 1. Ensuring them a stable and healthy environment to grow up which is crucial because everyone is influenced by their environment. 2. To support your child and be a role model and let your children learn how to make their own decisions.

I think the best gift parents can give to their children is： 1. A stable and healthy environment to grow up. This is crucial, because everyone is shaped by his environment. 2. Supporting them while letting the children learn how to make their own decisions.