What command to launch a kde plasmoid and the kickstart menu

Can someone please educate me on how to launch plasmoids with a command? I am trying to make a launcher for cairo-dock or glx-dock for some plasmoids but I have no idea how they get launched.
I would also like to know if there is a command to launch the kickstart menu.

An example of what I want to do, I would like to launch AppMenu QML from an icon on Cairo-Dock or a Calendar plasmoid.

One method I’m aware of on a standard KDE install to “launch” a plasmoid is “plasma-windowed”.

For the Kickoff-menu:

plasma-windowed launcher

For the calendar:

plasma-windowed calendar

Then there’s also “plasmoidviewer” (available in KDE:Extra), but I haven’t had a look on that yet.

Does this Development/Tutorials/Plasma/GettingStarted - KDE TechBase help?

What I did was

zypper in plasmoidviewer
plasmoidviewer webcamoid

and it displays the plasmoid in a window.