Thanks to Ztrains.com, I have built a Grassinator (Plans are Here). What is it? What does it do? Several different manufacturers make static grass flock, small filaments that when a static charge is applied, stand on end to resemble grasses (see a how-to video here). Noch makes a static applicator, but costs around $150. Ztrains has plans for one for under $30. I just followed the instructions there and now have my own Grassinator.
The first time I tried it, there was a problem. I shook the applicator, but little of the flock fell out. I had tried to shortcut and used the wire from an old tea strainer instead of buying a piece of screen wire. I finally gave in and bought the wire and found it to work as it should.
The first areas I tried it on are pictured to the right. This was with a Medium Green flocking. I later went back and overseeded with a darker green, although the Medium is probably better for field grass.