Etsy seller NES Box didn’t like the fugly exterior of their external hard drive, and so did something about it. That something was to drop it in an old NES cartridge case. The cartridge was just the right size, allowing the drive to fit in perfectly.
It’s powered by USB, so you won’t need any external juice. Created by them, it’s a one of a kind item.(Until someone else makes one) So it will cost you $180 if you want one. The only problem with putting things in old NES cases is that it might get lost among your other cartridges if you aren’t careful. Or your friend might borrow it instead of an actual game.