Your teen can participate in the life of this grandparent through service. Encourage him to bring or make decorations and gifts to give the grandparent-photos and drawings for the nursing home walls, collages, poems and stories to read and display. Have him plan things to talk about-anything of interest to him. Explain that it is possible the grandparent understands more than is believed. This is also true of grandparents who are unconscious.
Teens can also bring books to read to their grandparent, or photo albums to share together.
Have your teen demonstrate a talent to his grandparent and talk about it together. If a grandparent lives a distance away, consider purchasing a computer for the grandparent who does not have one. Hook them to the internet as a gift and have the teen keep in touch through email and chat rooms. You can also set up a private web page where your teen and the grandparent can each have a section in which to display pictures, messages, stories and more. Splurge on telephone calls.