Now that books have been added, Mojang needs to figure out a way to let us conjure up some custom paintings and perhaps delve more into music, but I have absolutely no idea how that would work in SMP. If anything, making the notes sync up with other players would just be a disaster.
Here's hoping for 2014 we'll be able to paint.
Rollback Post to RevisionRollBack
Check out Boats Evolved; the fancy huge customizable boats Notch tweeted about brought to life!