I knew I'd seen that case somewhere, its an easynow! They were horrible cheap computers, but they case is very cool, particularly with those matching monitors omg I've never seen anything like them!
There are a few slimier late-90s designs, like the Apple Studio LCD - the prob is that all this stuff is incredibly collectable now so you end up paying too much for what it is, if you can even find it!

You could scrape something together using CNC cut acrylic sheets slotted together, but it would be really hard to do curves without proper manufacturing.
For example this is a
CNC acrylic case (a lot of university's and hacker spaces would have such a machine)

That's prob the closest you'd get at the moment, although I'd be really surprised if we don't see some popping up on sites like Aliexpress, it can be fun looking there,
this is not exactly what your looking for but it is kinda funky.