Quick question: who invented the Mouse and when was it first introduced? The answer to this and other questions needing an answer can be found at the Computer History Museum in Sunnyvale CA. There are many things there that were found in dumps and trash piles, the ultimate fate of outdated hardware in the disposable age we live in.
Docents are disarmingly knowledgeable and ready to challenge anyone for techno-knowledge, since after all this is nearly in the center of Silicon Valley! If you want to show anyone young enough not to remember what an Eniac is, or TRS-80, or Lisa, then this is the place to go.
And there's both an In'N'Out Burger and Krispy Kreme location less than a half mile away!
I currently work on software for the IBM midrange System i (name progression is as follows: System 38 -> System 36 -> AS400 -> eServer iSeries -> System i -> IBM i for Power Series), so I can identify with the old mainframes and then the midrange systems that came along later. Most of these midrange systems blow away the old mainframes in term of computing power.
They even have a Norden Bombsight (USAF page shown at right) there -- a rare thing to behold. They are always looking for items and would appreciate any you might have even non-working ones. I was able to find a version of the Enigma machine there, the device for encryption used by the Germans in WWII.