Here’s a tip Ali Kirby who blogs at TheMamaReport.com emailed in:
Since the time my oldest was two, we’ve helped our children stay entertained in the car by keeping a crate of books by their seats. Instead of using special books we’ve received as gifts and risking them falling out of the car, I’ve found three ways to acquire books inexpensively to use in the car:
1. Paperback Book Exchange Store: My husband and I went through our book collection and cleaned house. We took those books to the paperback book exchange store and received in-store credit for them. We used that credit to purchase “new” books for the kids.
2. Secondhand Store: Most of the secondhand stores I have been to have books for around fifty cents each. We’ve found some great books this way — for pennies on the dollar.
3. Garage sales: Most people sell children’s books very cheaply at garage sales. I have paid anywhere from ten cents to fifty cents per book.
Want more ideas? Check out my post on Five Ways to Get Books for Free.