Wait and register in store so you can get the goodie bag - there isn't that much good stuff in it, but they give you coupons and I think there was a Shutterfly book code in it.
Target is the same way - if you start the registry online, they might not give you a goodie bag. I had to ask for mine (started online, then finished in store).
Go on Amazon. Make a wishlist. Add the "Add Anything" and you can add stuff to your wishlist from any site.