When you decide to go green, there's no need to break the bank replacing everything in your home. It's best to avoid buying new products until you really need them (even the greenest new items have an impact on the environment -- most bamboo is shipped all the way from China).
First, consider shopping for secondhand items at flea markets and thrift stores, and refurbish or find creative new uses for items you already own.
Second, when you do decide to invest, look for products that incorporate recycled content (since it reduces the use of raw materials), renewable fibers like organic cotton and hemp that can be grown without most pesticides, and wood that comes from forests certified by the Forest Stewardship Council.
Green goods may cost more than housewares made from conventional materials because they're not manufactured on the same scale (many are more labor- and management intensive). Selection, however, is flourishing. If you don't see these green products at your favorite retailer, please let them know you're looking -- it's good to show retailers there's a demand!