I'd like to point everybody here to the awesomeness of plastic crates.

They have holes in them -> airflow
they are perfectly stackable -> win
Putting you equipment on the floor is just asking for trouble -> fire

I mean it guys. Your equipment is all very awesome, but please take care of you, yourself and your house by not letting stuff burn.

This is what I am setting up. Need to find a way to put the PSU in there without it blowing the warm air into the crate.

The white thing is a vertical-fan which is awesome for stacking 3 or 4 crates.

http://i53.tinypic.com/296n4hc.jpg