I made a discovery. I had removed all the elements and saved the Kylan sky as blank. And was playing around with the land speeder. I happened to go into a box I'm building in a what do I see in my favorites.... The speeder!! You can use it in any toy box.
Played around some more. If you put a Door down and start a new INterior, all the items will be unlocked in it as well. Additionally, there are some new hallways that have a Dwarf mine design.