Here's a tiny room box that I whipped out a few weekends ago, when I had a bit of time. Most of the pieces were already made, so it came together much quicker than it would have normally.
The room box is about 1" wide, and 3/4" deep.

I've been playing with different ways to make small-scale plaster. In this box, I tried a putty that I had lying around. I like the effect, but it was a bit difficult to work with.

I tried to do a bit of aging on the tapestry and carpet. The book on the table has a real leather cover, though it can't be seen now that the book is glued down. I make a whole bunch at once, and then use them as needed. I'm unhappy with the tapestry rod. I'll probably replace it with something a bit thinner and older looking.