I accidentally Fus Do Rah'd in my Markarth house near the end of the entrance, thereby blowing everything all over the place. When it became apparent the stuff wasn't going to clean itself up I just moved everything back to Riften. It took less time than it would have to try and place everything back the way it was. Be very careful when picking up your controller while holding a glass in the same hand.
Oh man, I'm still having nightmares about accidentally Fus Ro Dahing in Vlindrel Hall. What really hurt is that I'd just bought and furnished the place and spent about half an hour real time picking things up and moving them around and arranging everything just how I wanted it. And then I pretty much blasted every other item straight down the length of the place into the front hall.
I tried to undo the damage but after five minutes or so I gave up, picked up everything and walked down to the market district and sold it all. It was just easier. Made some decent money, too, all that silver.
What was really funny was that Argis just sat there calmly munching on a loaf of bread through the whole ordeal, and five minutes earlier he'd gotten all snippy with me for trying to move a salmon steak off the table and onto a plate. For
that I got a gruff verbal dressing down, for bouncing most of the decor off the inside of the front door with a shout... nothing. Those housecarls sure are an odd bunch.