BackPack is a sturdy, sleek looking shelf designed exclusively to attach to the back of iMac and Apple Cinema Displays. This handy little piece of heavy gauge steel is perfectly sized to hold hard drives, USB peripherals or even a Mac mini. (If you use it to display your favorite Star Wars action figures, we'll totally understand.) You can use the perforated base to tie up that web of cables lurking behind your Mac.
TwelveSouth Backpack V2
The BackPack by Twelve South is the ideal complement to the work around the Apple iMac or Cinema Display neat and tidy. It is a height-adjustable shelf mini thick steel which is fastened to the equipment rack. The additional storage space is suitable for hard disks, USB hubs, iPods, phones and the like. The backpack does not require screws and holds due to gravity and two adjustable clips. The perforated surface of the backpack offers electronic equipment is well ventilated. As the backpacks are easily adjustable in height due to the mount with a simple clip, the stand of an Apple iMac or Cinema displays the same house several backpacks and thus provide space for external drives and iPhone or iPod at the same time.
What can be kept on this cleverly perforated tray? Things that you can out of your sight, but do not out of reach, such as Hard drives, USB peripherals or even a Mac mini.