It's not exactly a UNIX artifact but in the late 60s - early 70s when
we wanted a break at night we'd go down to the second floor of building
2 which had a PDP-15/GRIN-2 and play space war. It sticks in my memory
because there was an Etch-A-Sketch hanging on the side of one of the
equipment racks with a sign under it that said "In case of fire, throw
in".
Anyway, I have a hunk of DEC fan-fold paper tape with double-sun space
war on it; the boot address is written on the leader in my teen-age
handwriting.
Somewhere I have a paper tape reader. When I have some spare cycles
I plan to read that tape in and try to get it running as folks have
VMs for that architecture. Probably will have to build a button box
to go with it - I recall that there was an 8 button box, 4 for each
player - turn left, turn right, accelerate, and shoot. And it also
read the front panel console switches to change the game settings
such as limited/unlimited ammo, limited/unlimited fuel, tumble-mode,
etc.
Another non-UNIX artifact that I came across is a 1974 BTL directory.
The departmental index is fascinating - gives a view of what a real
research lab looked like.
Jon