One great idea which is floating around out there is the need to create permanent spaces for lefty types to congregate - both for general merriment and constructive activities. An example of this is The Tank, which is a nice space in NYC where us lefty bloggers were given a home during the RNC. Cosmopolity is losing the space, sadly, though hopefully they'll find a replacement. And, they're pushing to make the concept national -- to create similar spaces around the country.
And, on a related note, let me suggest that you attend your local drinking liberally events.