Oh man... this is... simply FANTASTIC
I also have envious (well, not everyone will agree with the use of this particular adjective here) collection.
Good source for me were old floppy and HD's, as well as various military communication and optical equipment... but those things are very rare these days,
My current problem is, I have no more space for any new stuff.. but whatever I managed to collect over the years, hopefully it will last me for the rest of my life.
Or I have to move into new house (with double garage
... and in the country with dark skies. Already looking in Northern VIC, Seymour, Heathcote, Castlemaine, Daylesford)