I use leafy material I bought at Wal-mart for $10. Used it last year for the first time, along with some cheap replacement, shock cord, tent poles from the auction site for another $7, and made a very useful, and effective, portable ground blind. I was within 12 yards of bucks 5 times - but missed the only shot I took!
Thought I had a great idea, until about 2 weeks ago I saw something very similar in a catalog that came to the house! But, mine is significantly larger, and less than half the cost. I haven't learned how to post pictures, but PM your email address and I'll be happy to send photos so you can see how small and large it is.