It is alright having a couple SATA HD drives hanging around on shelves or in drawers but all of the time they are collecting dust and that damages the device.
So that is where these cases in and there is a little hint of retro in there as they have the look of an old betamax case.
Product Features of the SATA HD Case in the style of a betamax case:
•Store your 3.5″ SATA hard drives in padded comfort
•Thick anti-static plastic case
•Side locking tab holds your drive in tightly
•Front and spine label
•Looks like a Betamax cassette case
Prices start at $9.99 to $24.99
Source [Think Geek]