The Ikea EKBY Shelf Unit contains two simple brackets and a shelf, but when taken apart, suddenly the brackets have all kinds of new uses. You could make a set of new sconces with one shelving unit with this simple hack.
This Before and After is especially interesting when you think about all the different types of brackets and cord sets you could mix and match. Perhaps a DIY bracket could be done as well?
You can read more about the project on Jenny's blog; the good folks over at PoppyTalk blogged about this project in English, and also provide sources for the light kit for those of us living in the states.