Pretty cool technology. OLED Walls?
http://www.cnn.com/2008/TECH/10/10/sheets.of.light.oleds.ap/index.html
http://www.cnn.com/2008/TECH/10/10/sheets.of.light.oleds.ap/index.html
You could tack that sheet to a wall, wrap it around a pillar or even take a translucent version and tape it to your windows. Unlike practically every other source of lighting, you wouldn't need a lamp or conventional fixture for these sheets, though you would need to plug them into an outlet.