Yesterday we went to the city of Den Haag to do some shopping.
Since I ran out of unetched PCB-materiaal and miniature switches I took the opportunity to buy some at the only electronics shop in the neighbourhood: Radio Twenthe at the Stille Veerkade.
Till some years ago in the area we had some nice shops with electronics: Radio Ster, Stuut & Bruin in Den Haag, Kok in Leiden, Radio Display in Utrecht. Since the lack of interest in homebuilding has increased and the possibility to buy components on the internet (eBay, marktplaats, dx.com etc. etc.) all those shops dissappeared.
As far as I remember Radio Twenthe has always been there; the owner told me that around 1960 the business started. They still have a large collection of vacuum tubes, DIY building kits, loudspeakers, switches, transformers, wiring etc.
You can approach Radio Twenthe via their (limited) website: