As Ilya said, who sent me the link:
Don’t take the first case to Boston’s Logan’s airport!
Of course they don’t tell you where you can get any of those cases, or if they’re case mods (people who customise or build their own computer cases) like here or here.
But, after a wee bit of googling, I found where the case that looks like bomb came from:
It’s what they call a “wicked ass case mod”:
Image from Bit-tech.net‘s site.