Add the option "Close main window" to main window

[Bobo8]

He, I have the option "Close main window" set because it suits me best, but sometimes I need to insert several clipboard items into one target form and dragging with the mouse does not work (which unfortunately is quite common) - it would be helpful if the main window remained open even after double-click on the clipboard item.
However, this setting in the main window should be temporary. After manually closing the main window, it should return to its original functionality.

[morozover]

Try https://www.4t-niagara.com/tray.html

It allows to pin any app: