Wait, you can work on an existing project for NaNoWriMo? Like a writer-based New Year’s Resolution? If that’s the case, I am going to finish Day 2 of Monsters of New Haven High by the end of November. I already planned on it, but it feels kinda good to have a public goal. 
I also have some work to do on a collaborative game (current title: Uncle Irwin’s Bookshop) because it’s in the production queue, but I have a little longer for that one.