A mirror can be a great tool in your home, whether you're trying to make a small space look bigger or a dark space look brighter.
Hang a mirror at the end of a hallway; it will make the space appear longer. Hang two across from each other to make it appear wider. Plus it will bounce light from the fixtures to brighten a normally dark area.
The same holds true for a dark room, hang a large mirror and flip on the lights. The light in the room appears to double making the whole room look and feel brighter too.
Mirrors can also help accent great architectural features in the home like a fireplace. Hang a mirror directly across from the object so it appears as a highlight on both sides of the room.
All of these mirror tricks work especially well in small rooms, that's why you'll see mirrored doors in a lot of smaller rooms.
Now to keep those mirrors doing their job, clean them with rubbing alcohol! Use a lint free cloth to rub it into the surface of the glass and then use a squeegee to clear the liquid and leaving a streak free shine!