A few years ago, my wife told me about a group of people who make a pledge to not buy new things for a whole year. There are exceptions on their list, of course; there is no such thing as used food or fuel, or other consumables, and it is expected that certain important items like underwear will still be purchased new, but for the most part, the rule was to buy it used or do without. Having been used to buying nearly everything new my whole life, with only a few exceptions, the idea did not sound particularly practical, or even feasible.