Here are a few more of the designs.
These smaller boxes have a postcard or photograph as the background. I
think this idea is very effective.
Zara uses a variety of materials for
the boxes. Sometimes she chooses dolls-house wallpaper or wrapping paper
for the background but sometimes she just paints it herself. Her husband
makes some of the miniature furniture but it would be easy to purchase
dolls-house furniture to get a similar look. She is very clever in the
way she creates objects from anything she has to hand, often painting
and cutting paper or cloth to give the right effect.