Visit the library. Instead of buying books, CDs, movies and magazines, borrow them. The library is free, local and eco-friendly. Imagine how many resources are saved when hundreds of people share one book from a central location!
They also have books on CD or tape, video rental for FREE!, Cookbooks, learning a second language and it's a great outting to take your kids on.
See if your library has a summer reading program for kids - my children love this! They read and get prizes from the library.
Also, my family is great about loaning and giving books to the others when we're done and passing them around. This is nice because you don't have to go to the library and the concept is the same. Many people reading the same book saves resources!