Wago is selling their mounting solution for these tiny wire connectors but they were out of stock when I wanted to buy them. On top of that I'm pretty sure all of you guys agree there is a lot more fun iterating such a small piece of plastic design 27 times before release :)
The DIN rail mount spring with minimal footprint is designed to use it as universal so you can add your own device holder and use it as a generic mount on DIN rails. I have uploaded the Fusion 360 file so you can check the dimensions and make your own add-on.
The author hasn't provided the model origin yet.