Should you find yourself in The Netherlands, make time to visit the Museum Speelklok in Utrecht.
No vintage electonics, but I hope a mention is allowed as the museum houses an interesting collection of clocks, music boxes, automata, self playing instruments, barrel, dance and fair organs. I know these things are of interest to some of our members.
There are guided tours where a selection of the instruments are demonstrated. I spent a good four hours there.
See some of the instruments in action here....
https://www.youtube.com/playlist?lis..._Ob2vsPZAdkNuT
(No connection with the museum or the Wintergatan band, but their Marble Machine video is worth a look too!)
SR