Well i already have 3 ancient p1 computers, so unless its an i386/i486 or a p1 server tower from the late 80s/ early 90s, i wouldnt want any more old computers. I just really love the looks of those ancient server towers, i think they look awesome and badass and cooler than any modern case in my opinion. Altho i also have a few modern cases which i aquired just because i realy liked how they looked. 1 is an old GMC case from around 2003/2004. It looks simple, but it has a cool looking door/cover with a blue mirror on it. They are not too rare, but its still hard to find them. I just tried to look for a picture of this case on the web and couldnt find it. I guess this thing is rare. It was one of the first cases they made after the company was established in 1999 or something.
But hey, One of the coolest and as far as i am concerned rarest laptops i ever owned is the MSI MS1029 I bought this thing in 2004 i think, used for 900 bucks (my first actually good laptop, before i only had a few ancient P1 laptops). The laptop had an X700 128MB GPU (still performs 100x better in games than an acer i bought last year), an AMD 2.0 GHZ CPU and the best part is this thing was semi-rugged! The entire lower chassis was made out of thick aluminium, (yes it heated up like crazy but this never stopped it). And the design-wise, i havent seen a cooler looking laptop ever since, The design was simplistic, but they made it look so cool!

Easy to clean too.

and it just looked awesome
even on this low quality photo it still looks cool
But despite of this laptop being rugged, Unfourtunatley the plastic cover and the hinges lacked in durability. After about 2 years of use, the hinges wore out and snapped. This is when i learned of the rare nature of this laptop as i looked on ebay almost every day, to find the hinges and the cover. I couldnt find it. I tried making my own hinges but my craftsmaship skill was too low and i lacked proper power tools. Besides, the laptop cover around the hinges also cracked open and screwed up. That hinge thing was a poor design choice on their part. Over the time, i ended up loosing the ribbon cable from the screen and eventually the inverter. BUT! i still have the laptop without a screen and its still working like new (with an external monitor of course)
I am still hoping to this day that i might find another one of these MS1029 laptops for donor parts (cover, the cable, the inverter and the hinges) and now i have proper power tools, i think i can make my own replacement hinges. So the remains of that MS1029 is also a very rare relic i have
dont hate people who rip you off,cheat and get away with it, learn from them