Lighting is important. Ask any woman, and she'll tell you the lighting of a room is one of the first things she notices and admires. You don't have to spend a ton of money on a beautiful chandelier, (though if you can afford one, go forth and impress). Instead, an origami lampshade fits over your existing bulbs and adds dimension and a soft glow. 

Shop: werkdepot
What: Origami Lamp Shade, $135.62