1. Could you wear the same six items for an entire month? That's the challenge over at Six Items or Less. What started as two friends examining their relationship with clothing has expanded into a global experiment. (In case you were wondering, undergarments, shoes, accessories, work uniforms, outerwear, and pajamas are excluded from the six items.)
2. Look around at what you already have. I've gotten to the point where I continually evaluate the "things" in my life: am I actually using this? Do I still enjoy it? Do I really need it? I keep a box in my closet where unused/unloved/once-loved-but-haven't-looked-at-in-six-months items are placed for donation. When you make a concerted effort to be aware of how much you already have (read: how did I end up with all of this junk?), it curbs the desire to buy more.
3. Buy less NEW stuff. We right-brained creative types are stimulated by having pretty things around us that other people think are…crap. Shopping at thrift stores can help feed that visual craving without hurting your wallet or the planet. For a listing of places near you, try the National Thrift Store Directory, or your local Wiki page. (I'm not even going to mention the wonders of Etsy here. That place is dangerous for those of us who drool when we spy a vintage brooch or scarf made out of recycled materials.)