I often see “no crown moulding” as an advantage in decorative painting.
The ceiling is the “fifth wall” and is usually ignored.
Here are a few examples:
This little girls nursery has a lot of funky angles in the room, the “canopy”, created by the scrolly border enabled the funky lines to be incorporated into the design. The light colors keep it soothing and calm.
Here, the same idea applies, in the two shades of lavender and green accents. There is no design on the ceiling-but the whole room is painted shades of lavender.
This hot pink and green is a little more fun.
Here there is a little bit of moulding that we totally ignored, and carried the dots from the walls onto the ceiling.
Start thinking about that fifth wall !