Absolutely loving this idea! I first heard about this from Pumpkin Rot, of course, and promised I'd share it along! Not sure I can pitch in as I'm a little bit busy since I'm moving during these next few days, but if you're a haunter or Halloween purest, feel free to keep classic Jack o's alive and join in!
Here's the project: carve a pumpkin for every night left in October and leave it in a place that you feel needs a handsome jack o' lantern. Here's the site for the details, where I found these fantastic pictures from people from around the country, and the world, showing off their jack o' lanterns in awesome places: The Great Pumpkin Project.com