Ok, examples that I have had clients ask for have been things like, if an image or PPT is loaded into a file, a link to that file appears in a table in QB (logging what is in each file on Sharepoint essentially).
Some have wanted a file to auto attach to a record in QB. Other have wanted an Excel sheet to auto import when placed into a SharePoint file, to create new records or update to a table in QB. Some have wanted documents to update fields with text for a help page or job description if they were loaded into a file on SharePoint.
I have others, but this kinda gets the gist.