Outwater now offers economically priced recycled Cornice and Crown Mouldings that have been specifically designed for use with indirect lighting. Manufactured to easily accept a variety of cove moulding light fixtures (pictured with Outwater’s.
This is another example of a cove style crown moulding but with a double layer of buildup on the ceiling. This is a bit more formal but could still work on your ceiling height in the living and dining rooms.
Powder room :: board and batten supplies: x (Don’t use baseboards with a fancy top, just a plain ol’ board will do.) Top Board: Same as above, x Vertical Battens: x Ledge: x Cove Molding: x Quarter Round: x