These very distinctly remind me of electric/electronic didactic "toys" from the at least 80s. Plastic cubes, containing a single (usually) circuit component, like switches, resistors, lights, coils, or just wire, with bare metal connectors on relevant sides and a symbol on top. You got a whole bag of them, as well as a gridded board you inserted the cubes into. Could make even usable stuff like simple radios.
Went around the internets to find the one I thought of and while I can't find it - doesn't surprise me - it was something very much like a cross between Denshi Block (connectors) and Braun Lectron (aesthetics)
krige · · focus · HN ↗
MomsAVoxell · · focus · HN ↗
<a href="https://en.wikipedia.org/wiki/Denshi_block" rel="nofollow">https://en.wikipedia.org/wiki/Denshi_block
Still got mine, which has a synthesizer module that can be used for interesting experiments.
In Japan the company made professional versions for students - they were a bit bigger and more robust, but the same basic concept.
krige · · focus · HN ↗
ceejayoz · · focus · HN ↗
<a href="https://elenco.com/snapcircuits/" rel="nofollow">https://elenco.com/snapcircuits/
krige · · focus · HN ↗
<a href="https://de.wikipedia.org/wiki/Lectron" rel="nofollow">https://de.wikipedia.org/wiki/Lectron
MomsAVoxell · · focus · HN ↗
<a href="https://www.petervis.com/electronics-lab/denshi-block-series/denshi-block.html" rel="nofollow">https://www.petervis.com/electronics-lab/denshi-block-series...
And:
<a href="https://axel.as-1.co.jp/asone/maker/MH17083/" rel="nofollow">https://axel.as-1.co.jp/asone/maker/MH17083/