When she goes to the supermarket, Bea Johnson brings along a sealable glass jar so the butcher can slide in a pork cutlet. In the bulk aisle, she fills reusable bags she makes from old bed sheets to carry rice, pasta, oatmeal or nuts. In fact, everything she and her husband buy is without packaging: They make their own household cleaning products, buy soap that comes unwrapped and return milk bottles to suppliers for refills. At least three times a week, Johnson phones marketing companies in her unrelenting war against junk mail. "The amount of money you can save by just carrying your own water bottle is huge.