It might be a bit of a task, particularly if we're not going to use creative for it (I would advise we do), but it might be cool to connect various points, like towns and such, by minecart rails. That way, guests could see more of the server, and it gives the arty types something to do - designing stations and cool stuff for the rails to go through. What'cha think?
There aren't many people that can be trusted with creative.