Would this do?
You can go to Wal-Mart's sporting goods section and get a turkey hunter's blind, which is a long strip of camo cloth that has short poles inserted into it, for about $20. You unwind the fabric and push the ends of the poles into the ground to form a semicircle around the base of a tree, then you sit at the base of the trunk, wearing a turkey hunting vest with a padded backrest is reccomended. Most of the one's I've seen are leaf cut and come in a variety of popular patterns. With the turkey season over in most areas they're probably on clearance, if not you can find them at Bass Pro or Cabela's any time. I've hunted deer with one many times.