Okay so the thing about beige whales - I could really have made a six hour video on this subject, there's so much depth to it - is that nothing ever leaves the list. If I die at 85, I'll be on my deathbed going "would have been nice to get an NCR PC."
The nature of beige whales is that they're things you know you don't really want, even though you want them. Like the Panasonic semi-pro video monitor/TV with the vertical VCR slot - I really, really wanted that, but knew fully I would not do anything with it, and I haven't. It serves essentially no function and if I never managed to get one, I never would have particularly minded that much, since I knew this would be the outcome. Now it's kind of an awkward thing that takes up space in my life, but, I do like seeing it there on the shelf.
The other thing is that there is no specific list, and if I tried to make one it would be deeply incomplete and also constantly out of date, because so much of this stuff is just things i saw a glimpse of once - and again, since they aren't actually particularly notable, they don't really stand out. They're just things that lurk in my memory, and if I see one IRL I go "ohhhh that thing wowwww"
oh i should clarify that i mean this NCR PC