Source (link to git-repo or to original if based on someone elses unmodified work): https://github.com/psifidotos/applet-latte-spacer/releases
Plasma 5 applet that acts as a spacer between applets. This plasmoid is coming from Latte land but it can also support Plasma panels.
* Length option can support three different modes:
-- based on pixels
-- based on panel thickness
-- fill the entire available space
* improve configuration window in order to follow Window Applet(s) style