Fri Sept 19th, do this:
1. Pick out a nice metered parking spot and fill 'er up
2. Roll out some green... fabric, putting green, whatever you got
3. Set up a chair, a park bench, some croquet...
4. Park it for the day, an hour, however long you can have someone sit and enjoy the park!
5. Join the flickr group and post pics of your day at the park!