Below are some of the grasses that I use on various projects from a variety of suppliers, which you can get in bulk far cheaper from model railroad companies that you can from war games suppliers. Pictured are a green and dead grass colored static grass, clumps of static grass flock and what I like to call straw in middle and upper right.
CAUTION: USE THIN IN ONLY A WELL VENTILATED AREA. AND WEAR EYE PROTECTION!!
Yes the thin has a super hot formula and accelerent in it. If it gets in your eye it will cure almost immediately. If you want to glue your fingers together, this is the stuff.
That's it for now.