One other component I didn't see listed: rotary
switches. ENIAC used tons of
them, originally for inputting static data (think ROM :-), and later to hold
tables used when they converted it to a sorta-stored-program machine (think
Providing they are not something bizarre - completely available. Most
of those rotary switches are modular (they can be bought as parts), so
the exact switch can be reproduced.
And what about the special plug wires (and the male
and female connectors used
thereon) which were used to 'program' the machine for a given problem - are
those still available?
Probably. Most vintage connectors, in general, are still available. If
I could see a picture of what the connectors on ENIAC look like, I
could tell you. I seem to remember them being pretty standard Cinch