A few months ago, I wanted a basic, but reliable, stand for my iPad and Nexus 7. It didn't take long to sort through the options to find this gem. The Anker multi-angle portable stand is sturdy, well-built and offers a variety of different angles for your viewing pleasure.
I ordered a second to have one at work in addition to the first one at home. And since it's currently $9.99 on Amazon, I suggest you snag one of these for your desk.