Just a quick update-Built my little vocal recording booth.
It is composed of Duck brand air-conditioning foam insulators, and a small media crate (about 7″x9″). All purchased at Wal-Mart for just a bit over thirteen dollars. No glue applied-the foam-just fits snugly together.
It definitely helps with killing the sound reflections and picking up external noise. And it does not actually sound like it is in a box like I initially thought it would. I will keep experimenting with it of course.