Last year about this time I was inspired to build a gingerbread house for a central Christmas decoration.
I used a large cookie sheet for each panel.
It ended up being 3 stories, (or 2 full, plus the attic floor under the gables) it had two wings, a wrap around porch, a bay window, a nut covered fireplace chimney, a reindeer stable across the back. We put a small candle lamp inside so it shined through our hard candy "glass" windows. We built it through the month of November in one corner of the dining room; our regulars checked the progress every time they came in. We finished it with a snow covered yard fenced with yogurt covered pretzels, a skating pond, train & track traveling through a tunnel, decorated trees, sledding hill, etc. Over 50 lbs of powdered sugar before we were done.
It created a lot of attention, was on the front page of the paper.
The biggest problem I had was that it continued to dry out, for weeks. I'd walk by and see a 1/2inch gap traveling up a corner for 2 entire floors, that I had to fill with frosting. The dry cold winter air and the ventilation fans really took it's toll. So, I'd plan my house decor to allow for additional icing on the corners as warranted.