Make it joyful

Read books yourself

Make book an important part of your life

Read to the kids

Teach them to read early

Little to no phone use early on

> Read books yourself

Not a parent, but I'm guessing this part is very important :)

I would also say the reading to kids part.

My father goes through books like nothing; my mother not so much, but I have very fond memories of her reading "jock of the bushveld" to us.