The first thing I did to try to make the glass-and-metal house look more natural was to add a stone floor. Not a real stone floor, of course (though I did briefly consider trying to find some pebbles and mortar), but an amazingly realistic faux-stone floor made of a material I never would have thought of on my own… egg cartons.
Cardboard egg cartons are really perfect for this application– they’re smooth on the front, but the back side has a great texture to mimic stone, and they’re already this grayish-brownish color that works really well, particularly once coated in glue. Apparently miniature artists use egg cartons (and those cardboard coffee-cup holders that hold multiple cups at once, they have an even more textured surface) all the time to make faux stone surfaces, and I can see why!
It's All Frosting... 