I found the books at Value Village for between $1.99 and $3.99 each, and the brackets came out to about $7.50. I love it when cheap projects turn out so well. To add sentimental value to all that hip shelf-y coolness, one of the books (far left - How to Write and Speak Effective English) is the same book that was re-purposed by Ex Libris Anonymous to become the note book I recorded every detail of our wedding plans in. Cute.
The peacock feathers were part of my wedding bouquet.
All the prettiness made me much less bitter about reorganizing what I had previously decided was an ideally arranged room. To be fair, the Kinect is the coolest toy we've ever had, but I had fun moping about it all the same.