I found a DIY project over on AT a while back for building a ghost blind. I told a couple of friends of mine that still hunt and they built one of thier own. They have both taken nice mule deer useing thier blinds.
Here is a link on how to build your own, It is a long read but well worth it. If I still hunted I for sure would have one of these babies on my back heading out to hunt. Enjoy and good hunting.