The BackPack is a simple little shelf that mounts to the back of your iMac, perfect for hiding external hard drives or other small peripherals.
I bought a couple of them last week — one went on the back of my old iMac and the other went to my mother-in-laws for her iMac. Both of them will be hiding an external hard drive for Time Machine. They’re easy to install, sturdy, and keep your desktop nice and clean.
I should have bought these years ago.