Right.  Here are pictures of my Prototype.  I called him...ALPHA! (2.9GH/s)

I then created his identical twin BETA (2.9GH/s)

Not long after I built with leftovers, his slightly SPECIAL cousin GAMMA (1.4GH/s)

These pictures are of ALPHA, just after construction stage.

The case is made from an standard Australian Milk Crate.  One of those babies perfectly fits 4 x Radeon 5970s.