Do you have a windowless room that is just dreary? Whether it be a basement or powder room, there are some ways to lighten and brighten that room.
Adding a large mirror to your wall is one of the first ways to simulate the effect of a window, not just for bouncing some light but also for adding a sense of depth that breaks up claustrophobic wall planes. In a space with a low-ceiling, use as large a mirror as possible, reaching close to the ceiling (but not all the way up; stop 4 to 6 inches below) to distract from the ceiling line.
Adding windows to a doorway (by converting to French doors) also gives the eye that sense of peeking out into a space beyond, and lets a new ambient light source in, even if the adjacent “room” is simply a pantry. Add a few lights inside or a single ceiling fixture (with a cool fluorescent bulb), and the hint of light pouring out will give the illusion of daylight.
Tucking a few lights where they can’t be seen helps give your room a sense of an indirect glow that mimics light pouring in from a nearby window. Try placing lamps between beams, behind furniture (such as behind a sofa) or tucked next to a bookcase to make the light source more mysterious.
Want to create the effect of a window without opening up? A full wall of drapery creates a beautiful backdrop to a bed and implies a sense of depth beyond, even if you never pull back the curtain.
Get the other ways to work with a windowless room here.