So, it's been a couple of months in coming, but I finally finished the enclosure for my FCG. I did the whole project for $150.
I wanted to convert my front porch to an enclosure for a Pepper's Effect for the ghost. The layout seemed simple enough, just a matter of attaching everything without damaging the porch.
I used 4x8 1/2" styrofoam insulation sheets for the wall panels. Ideally this would have been thicker pink foam board, but I was going for cheap. These were only $6 at Home Depot. They had a metallic peel on one side and logo plastic on the other. I left them on to add a little strength since I would be painting over everything eventually.
Here is one of the panels primed with a grey latex paint that I got at Wal-Mart in the discount section. $7 for a gallon. Check the rejects in any paint department for projects like this, there are some great deals.