1. Black cloth tape (36mm x 12Y) = $3.20
2. Black corrugated board (20x15) = $1.60
3. Black paper = $1.70
Here's the end result...
The grid snoot is done so that the internal grid section can be removed, and the grid snoot would then become a snoot.
Here's a picture of the grid snoot at work. The grid snoot was used to focus the light on the subject at the "heart" area.