I'm a huge fan of The Tightwad Gazette (I own all 3). There are so many golden nuggets tips hidden in the Tightwad Gazette. Happily, it's often suited to our homeschooling lifestyle, and what's cheaper is quite often better for our environment. I've been "green" since long before it was fashionable.
Have you been to Hulu.com? It has a huge variety of free TV shows to watch online. We don't have cable anymore, and it helps fill the gap sometimes. Checking out movies, TV shows, and documentaries from the library is also great.