Interesting ceilings have always caught my eye. I have a handful of ideas, but this one ranks right up there in the "do it someday" list and reminds me of ceilings in the French chateaux we've visited.
BEST cabin living room: smaller stove on simple slab hearth, permanent bench/sofa... good for sleeping a person or two, storage underneath. Floor is perfect. Shelf over window optimizes the use of space. Beautiful colors.