If you and your children don't have library cards, get thee to a library (with kids in tow)!
And if you do have a library card, do you know all you can do with it? Check out the American Library Association's (ALA) slide show, "60 Way to Use Your Library Card" for inspiration. (Scroll down the page a bit. I tried to embed the code, but it does not work correctly.)
A library card puts the world within your reach!
A family movie night at the library. Photo courtesy of ALA.