I worked with my cubicle mate and decided on a Who-ville / Grinch that stole Christmas theme.
This was our concept sketch
The building facades were sketched on the foam core boards cut out with a sharp knife.
Then painted with spray paint
Doors and windows were added with paint and markers.
I asked a friend to cut out some vinyl letters for us and they turned out great!
We accented everything with whimsical floral sprigs and giant plants made from foam and tissue paper.
We had several clients and other building tenants come in and judge the cubicals. For an extra touch, we put Dr. Seuss images on our computer monitors and played music from the Grinch That Stole Christmas.
UPDATE:
WE WON !