I think it's also a good reminder that gifts can unleash "demons", so give with caution.
For example, I know one teenage girl who gave her friend a pair of pierced earrings. Very nice earrings and the girl really liked them, but her mother wouldn't let her get her ears pierced until she was 16. So, while this girl really liked and appreciated the gift, it brought up some rather unpleasant feelings - jealousy at her friends who had pierced ears, anger at her parents, dispair with herself. But at the same time, she also found a glimmer of hope in knowing that in a year she would be old enough to wear them.