How can I make a multi-drive USB hard disk enclosure?

What? Are you telling me you can not build something to handle containing a couple of off the shelf USB enclosures with a powered hub INSIDE of another container? Pick any type of USB enclosure you want, IDE, SATA or whatever, stack them, add a fan to circulate air just like the case on your computer has, add a powered USB hub inside and run out the single USB cable from inside at the hub to outside. WHAT is SO HARD here? You already said you can make things from acrylics, so why is it so hard to put all the stuff, cables and power supply included, INSIDE of another container you build by yourself? I have what I call an "open air" computer, which consists of two full height Seagate hard disks on their sides, a piece of plywood on top acting as an insulator and the motherboard on top of that. It all sits inside of a clear 3 sided plexiglass box with my monitor sitting on top. I added a small CPU cooler fan to blow over the hard drives for cooling. It has been running that way for years as a file server. All I need to do is dust it off from time to time since it gathers dust rather quickly being in the open as it is.