Hang out with your parents and learn something
Isn't it funny that you realize the true wisdom of your parents once you're in the real world? It's nice to get to know them as human beings, still learning even as they grow closer and through retirement. Take the time not only to hang out with your parents, but to learn something from them or with them. Go to a lecture, an art gallery or a concert. You may learn something about them you never knew before. Heck, learning something new together can even create a bond you never had before.