I made one out of Stainless Steel, Aluminum & Copper with every component of the rack isolated form each other with Pure Virgin Teflon. Next I will remove the feet from all the stereo components and replace them with a screw-on suspension that will be integrate and isolated from the rack shelves. It is fully adjustable for the height and width of the components so every time I change something I can adjust it. Might not be something you really need but it organize the gears and requires shorter cables.
I just post a picture when I first install it on my profile. I don't know how to post a picture.