Need save and undo for decorations

Title pretty much says it.

Save can possibly be easily accomplished by utilizing the same functionality that is intended to be used for when you move lots, perhaps combined with some of the Combat Deck saving functionality. This could allow you to save "variations" of your house if the appropriate items were either already on the lot or (in the bank?). It would be cool if houses came with a mini-bank of their own (the attic/garage/crawl space) that could be used to save the deco required for the variations. This would avoid complications with having to magically "retrieve" items from the town bank.

Undo might be a little more complicated, but it sure would be nice.