When getting started with Raspberry Pi Zero, many times I was thinking about and wishing for a such thing as snap-on pin headers. It would provide an easy solder-free way to breadboard with Raspberry Pi Zero. Though I thought those didn’t exist, those really are a living reality, I just needed to know where to look. Here is one example, targeted at creating custom-sized Dual Inline Package (DIP) integrated circuits (IC) sockets, but it can also be used with single pin header wires so long as the prong is not too thick. Snaps to the side of plated through holes.
20200306/https://www.digikey.com/product-detail/en/mill-max-manufacturing-corp/346-43-140-41-013000/ED6464-40-ND/1212326
And here is the alternative that does not snap on.
20200306/https://www.digikey.com/product-detail/en/mill-max-manufacturing-corp/714-43-140-31-018000/ED9164-40-ND/4456601
And here is another alternative… I bought this one earlier thinking that I could use it to create custom-sized pin headers, but it proved to be too tight for that purpose. However, for the purpose of creating custom-sized DIP sockets, it works just fine.
20200306/https://www.digikey.com/product-detail/en/samtec-inc/SSA-132-S-T/SAM1122-32-ND/1105784