How can I get an icon I am using in one Scrivener project into a different one?
ps - Happy New Year to the support team 
You’ll have to locate the icon again and add it to your other project. You can create a project template which includes your custom binder icons for future projects.
Icons which have been added to a project can be located in its .scriv folder under the ‘Icons’ folder, which is created when you add a custom icon to a project for the first time, so that a convenient place to copy from, possibly into a dropbox folder of commonly used icons.
Thanks, Robert. I found the easiest way to do this is to copy the icons direct from one project’s Icons folder to the other, rather than going though Scrivener’s icon manager.