I forgot to mention one thing. One of my favorite set things to use is older de-militarized camo netting (you can usually find mass amounts at surplus stores).
Why do I love using them? Here are a few reasons:
1. You can't purchase that smell from anywhere!!!

2. They are flame retardent
3. They make great folage and add the "I can sort of not really see through the holes" effect that makes people uneasy
4. It's fast and easy to work with; zip ties and a few supports if needed and you're good to go
5. You can make it as thin or as thick as you want with no messy clean up
Ryan