What racks do you use to put your rig(s) in?

[blunthammer]

I am working on a design for a rack to put rigs in. The tabletop and under desk approach is reaching the end of its useful life. I am crowdsoliciting ideas for a rack you would build to put your rig in.

So far I am thinking:

42U, maybe a 'shorty' for a single rig
A/C optional
Power strip in the rack
Shelves vs rails so I can just plop a rig on the shelf vs. hold it with one hand and screw it into the sides
Door optional
Sides optional

More color options than a bag of Skittles or a sleeve of Spree...

What would you build?

[dogie]

Probably easier just to buy one in, they're not that expensive especially if you can pick one up second hand. The main problem is the weight - not that easy to move. Door doesn't work for the amount of airflow / power density we use. Sides are required for hot cold corridor / heat ventilation.