Read to your children often or, if your children are old enough, have them read to themselves.
Ask open-ended questions about the book. For example, "Why do you think Johnny was sad?"
Act out parts of a book with your children. Encourage them to make parts of their costumes.
Instruct your children to draw pictures of scenes from books.
Make up a song about the characters in a book. Start the song and have the children continue.
Stop reading the book a few pages before it is over. Have your children write their own ending to the book. Compare their ending to the actual ending.
Ask your children what they think happened after the story ended. Encourage them to create a sequel to the story.