Oh I can vouch for stapled floppy disks!
Many, many years ago, long before anyone had heard of data protection or privacy BR used to have a mainframe based personnel system named PEARLS (I forget what it stood for). BR being one of the first to get involved with networked PCs with interfaces to mainframes they were able to update records from any depot, office, etc that could get access to the mainframe. Offices that did not have mainframe access could still submit changes using a standard form; the output from which was saved to 5.25" floppy disk, sent to the nearest depot or office with a mainframe connection and processed there. In the early days it was not at all unusual to receive a batch of change forms (for filing) with the relevant details on and the floppy disk all stapled together!