Allow action before requiring user signup (create node anonymously first, then prompt to register/log in)

Think this is the most applicable group. Prompting users to sign up before getting to see what your site is all about is super lame. Look at http://www.chipin.com right now. You can create an event right off the bat, simple.

So for our Drupal rewrite I want to allow anonymous users to create nodes then have them register/login to user accounts in the same process as a secondary screen.

Ideas

1. Not really saving node to db, but setting a cookie with all info then when the register, create the node from the cookie
2. Mashing up node create and user register into some sort of multistep process that stores nid in session then once they register, changes the uid for that node to the newly created account.

I think #2 is best, any other ideas out there?