Dain,
I tested this in my own game and it gave me pretty much what I've read about it. When you type "testingcheatsenabled true" into the cheat window, it allows you to move things like the mailbox and trashcan. It didn't give me any choices for things to do with those items. It just allowed me to move them. And you have to be in Buy or Build mode to move them, too. If you've read somewhere that it's supposed to do more than this, please point me that direction and I'll try to find out more for you.