In the mid '80s my uncle Lars offered me a small PDP-11, probably a PDP-11/23, but it never came to pass.
What would I have done with it?
I have some experience running SIMH and RT-11. Haven't tried getting RSX-11 or RSTS/E running, if it even runs on such a small system.
BSD 2.10 was released in 1987. That would have been fun! If I had been able to get it.
TSX-11, a multi-user OS booted from RT-11, looks rather nice.
"I appreciate SDF but it's a general-purpose server and the name doesn't make it obvious that it's about art." - Eugen Rochko