glass-cloche by The Art of Doing Stuff, via Flickr - industrial light bulbs, double sided tape to stick them to glass dollar store candle sticks, in a cloche. Works really well here, due to having a doll-sized chair that matches her desk chair, as well as the candle stick bases mimicking the table the cloche is on)
Great room the only thing missing is a bookshelf so the fireplace could actually be used.
Filling the interior of your fireplace with a mirror not only bounces light around the room; it also makes a small space feel larger. And if you have a colorful rug covering the floor, a mirror will reflect it back into the room—an artful bonus.