Wire up the wardrobe. Another way to get lots of light into the back of a dark room is by installing a closet with glass doors. By day, the glass will reflect natural light from the window. By night, the closet can be a lightbox, where LED strip lights glow from the garment rails and shelving. Edge other shelves in the room too, for an all around glow. | Visualizer: Dim Eysner.