This third party prop stand case is what I used, one-third of the price, and has a little loop band to hold your stylus, since the cover will block the pen's magnet dock.
Fair warning, the cover's magnets do cause a couple tiny distortion zones when you are handwriting or sketching with the device, and it's not as easy to keep slipping the device in and out of the case. However, if you can work around those (and the official case seems to have the problem as well, from what I've heard), then this is a fairly nice cover, and the prop is a handy little feature.