sima_pat's ideas
Ceiling
waterfall edge
glass door into gym
Cabinets
Glass door into basement
Storage area for kids with door (doesn't need to be chalk)
Door
Dual sided fireplace
Stairwell Wall and railing
Shower area. Don't need a tub just a large shower with bench
Barn Door
Wall
"Bar" seating behind furniture. A "raw edge" wood bar seating would be ideal
Colors
Q