Limit or eliminate television. We banned television on school nights for the entire family when the oldest hit kindergarten, not because TV is bad, but because it takes up too much time. It was far and away the best decision we ever made. It opened up hours for every member of the family to do things together and apart. Books, music lessons, sports, catching bugs in the yard, etc., all were possible. My youngest even took up knitting at seven. Because my kids weren't entertained, they became interested. When we watched television on weekends and vacations, we were selective, and we watched together. We've seen every David Attenborough video (Netflix!) together.
Both my kids are musicians, and both read daily. The oldest is studying wildlife biology at the University of Montana, the youngest plays two sports in high school, plays on the school jazz band as well as our local youth symphony.
One good decision, faithfully executed.