I like these! They seem viable to me, now, living here in Boston. But I think they're pretty applicable (and hopefully inspiring!) for anybody who reads them.

Seven Steps to Thinking Globally and Acting Locally

(from The Great Neighborhood Book, by Jay Walljasper, editor of Ode Magazine)

1) Team up with your neighbors. Take advantage of the power of collaboration with other committed, energetic, expert (think of all the know-how in your neighborhood!) folks.
2) Think globally, eat locally. The power of your fork is incredible! Most food we eat has traveled way over a thousand miles (fossil fuels...), was doused with pesticides, isn't nearly as tasty as fresh, local produce. Go to the farmer's market, or buy in to a CSA- community supported agriculture- where you get a bundle of fresh, locally grown veggies every two weeks or so during the growing season.
3) Become a guerrilla gardener. Take over vacant lots in your suburb or city by making a community green space of some type-- a garden, park, etc. Do it with your neighbors.
4) Transform your neighborhood into a village. Wouldn't it be great to walk 5 minutes or less and be at your library, post office, grocery, park, transit center, school, etc.? Check out the New Urbanist movement.
5) Imagine your neighborhood with half the traffic. "What would your neighborhood look like if people were valued over automobiles?"
6) Cut down on your driving. On average, U.S. households make more than 12 separate car trips a day...! In Boston, 35% of people don't have cars! People in these households get more exercise, feel healthier, know their neighbors better, have more money left over for vacations... (And you know how I love vacations!)
7) Save the Earth by enlivening your neighborhood. (See above!)

Some cool references: www.carsharing.net, www.cnu.org (Congress for the New Urbanism), www. nwei.org (Northwest Earth Institute), www.pps.org (Project for Public Spaces)