Yes, I know it's October but as of right now, you can sign up for November's National Novel Writing Month!
If you're not familiar with NaNo, all the info is on their site, but what it boils down to is challenging yourself to write 50,000 words in 30 days. The word count is basically equal to a novella or a good chunk of a novel. It's for people who want to try something new and different. It's for people who say over and over again that "one day" they're going to write a book. It's for people who are already writers but who love the camaraderie of thousands of people in what's usually a very empty and lonely writing boat.
Pep talks from writers, forums for almost every genre, and fun stuff on your profile page - all free! Yes, free! The folks over there would love a donation but it's not required. I usually donate something and then I order that year's cool t-shirt. (Even my husband has a general NaNo t-shirt!)
Why not give it a try? Go on over and check out the site, explore the forums, read the "rules." November is going to come and go no matter what, so let's fill the days with words and stories and writerly angst and characters who don't do what we want them to do and plot bunnies and dares and halos and...well, you'll just have to go see the rest for yourself.