I mostly build stuff so my son can run around inside and do whatnot to it. He's burnt down the pirate ship I've built him several times....I just finished off a tunnel to an undersea dome facility. I can't wait to see him drown it.
Today was a day of slimes. I've never seen them before, then today as I exited a monster trap area I came acrossed a herd of the little guys. I wish I could make them pets.