[QUOTE=philbaum;485964]
The big problem i had today is that the local Walmart and Joann chains didn't have "fun foam" and didn't know what it was. I later found the term "craft foam" and hope to have more luck finding that tomorrow. /QUOTE]
You will find the foam sheets in the craft section at Walmart for about 50 cents each. They also have stiff plastic mesh sheets for less than a dollar.
I've made two of them, one regular size and one smaller size per this website
DIY Reflector-Diffuser
Here are a couple of with and without photos to show how well it knocks down shadows.
Without
With
Tim