Step 1: Books
The Dhammapada | The Torah | The Bible | Tao Te Ching | The Qur'an | The Analects | The Bhagavad Gita
Choose editions you like the look of; try to get a nice variety of colors, heights and widths (the depth doesn't matter so much in this design). Used books add character and you can often find these for just a few $. I removed the dust jackets from all of the books, because I preferred the look of the cloth. Of course, the books don't need to be works of religion - Mike&Maaike have also done JUXTAPOSED: Power, and the idea is transferable to any set of books you want to showcase and whose ideas you think should be considered in a balanced way.