You can buy interactive story books and puzzles. You can start by reading her some parts when you're free and hopefully she will pick up the habit when you're busy. My younger cousin really loves her books based on fantasy which has puzzles and quizzes!
Kids also have a lot of stories to tell. So you can even ask her to make her own drawings and stories and tell her that you want to read them when she's done. This will definitely stimulate her mind and she will feel like what she has to say is important to you.
Read more