500 inspired ideas from around the world that cost nothing to implement but could enhance all our lives. 500 inspired ideas from around the world that cost nothing to implement but could enhance all our lives. They range from ideas that could benefit charitable organizations (donate airmiles to disaster relief fundraising schemes) to ideas that make people's working lives better (write the minutes of a meeting before it takes place) to ideas that help social relations as a whole (Boomerang Days when you return all the things you've borrowed over the course of the previous year.