Nickerbocker:
Being able to copy from a board layout to a package so that I can easily copy my footprints to be reused seems like something useful to know how to do.
You might be able to do what you want, but it won't be through copy and paste.
I found an ULP called "make-group2pac.ulp". It's description says: "Generate a package from a GROUP of elements and their pads you selected in the layout."
In the board editor, I highlighted everything, ran the ULP. It then created a package (in a seemingly random library, not sure why it selected the it did.). I got a ton of "Pad 1" and "Pad2 Already Exist" errors. I just kept clicking okay until it was done. But it appears to have created a board layout with all of the holes with unique names.