Electrical coupler for LEGO trains!
This is how it looks like
With the cancellation of the 9V system, power distribution on trains has to happen over cables between the vehicles of the train.
But the amount of cabling I am willing to do when putting together the train is very limited.
Adding a cable from a tender to a loco might be okay, but doing so for each coach of the train is not, what I consider a funny leisure time.
Thus, a simple way to distribute power between coaches without relying on metal tracks has to be found.
And this electrical coupler offers exactly that.