You don't need to redo all your lighting system and ruin your walls. There are retro-fit kits at home supply stores. You can also try shopping at flea markets and garage sale bargains to find an eclectic piece or you may also go vintage with antiques. Table lamps will brighten up your corner while floor lamps will give your space a kick of style and comfort. Sometimes you need not look far. Just a sense of creativity and an eye for brightness and contrast, then you'll see where to lighten up your space and design techniques.