Pre Y2k I had the task of finding a print Q server which had 350 q's hanging off it.
looked in all the usual places, then the stupid places.
Then it was find the switch and try and work out where it was using the port numbers.
On the second day I resorted to asking the cleaner.
She then opened her closet and at the back under a heap of cleaning crap I found a 386 bindery 2.11 netware server. Up time 7 years.
The cost of replacing said printer server with a MS one was in the region of 8k without licenses.
It might even now be still running with nothing attached to it because I forgot to pull it before it was end of contract for me and I don't think I told anyone where it was.