Re: Semi-OT: protoboards as seen in (aftermarket) 7K plugin 'Automatic 9-16 Point Rasterizer'
for the vertically mounted green protoboards you could easily have some made up from a fast PCB service. The card edge sockets are a standard part (30 contacts, 15 positions) from Viking, but I'm not sure about the blue guide arms.
Here is a datasheet for the card edge connectors: https://cms.nacsemi.com/content/AuthDatasheets/COOIS06714-1.pdf
Viking seems to be part of Eaton, and it's not clear from their website whether they still make card edge connectors. You could probably substitute any manufacturers card edge connector for the Viking part. Maybe you could have the guide arms 3D printed.
-- Jeff Dutky