Probably won't be as exciting as you remember.

We maintained some Wildfire systems on Tru64, which somehow took all the possible coolness of the "Digital Unix" name and inverted it into bizarro horror, into the late 00s, and it was mostly just depressing seeing what happened versus what could have been. Icing on the foot-gun cake was the IA-64 replacement ended up being EOLed before it was even delivered. That one came in on HPUX, which seemed to have been more often pronounced PHUX.

The minicomputers can get pretty expensive iirc. I haven’t looked in a while, but you may be paying a couple grand for one. For some reason, AS/400s are the same.

I bought a low end Alpha (DS10L) off of ebay about 2 years ago. I turn it on to play around with VMS occasionally. Alphas (and DEC, in general) were amazing.

We got early access to them at WPI back in '91 or so. They were amazing for the time.

I bought some 10+ years ago, and they are in storage, and I am also feeling that urge to go dust them off and power them up. If memory serves, I think I ran netbsd on them.

I thought Inferno sounded pretty cool. I do love a good pun, and it invokes memories of the original Doom.

OS/2 Warp

Amiga Workbench

NeXTStep

Plan9

OS/2 Warp is my favorite OS name, and when it came out, was pretty mind blowing in how it worked compared to everything else.