A few years ago a bought a real fixer. Over the years I totally gutted it and opened up the living room,dining room and kitchen. It was nice but opening up the space left the 8 ft ceiling looking boring. Structurally I couldn’t raise the ceiling. But I still wanted to add some interest to the ceiling and better define the spaces.
I bought 3.5” molding at the Home Depot that I wanted to make frames to attach to the ceiling. It was about $2.50/ foot. Your cost will depend on the size of your frames. I spent about $185 for the moulding. I cut the moulding at 22.5 degrees angle. One of the hardest parts for me was deciding the size of each frame.