Before we had EFB's...
We had ship sets with laundry service... So they would take the whole nav bag off the aircraft, then place onboard the updated navbag.... Old one going away to be updated and placed back onboard the next cycle.
We also have and always had access to the charts on the internet incase one is missing downroute (or for EFB failure) so we can print current charts and charts for the next cycle.
Same with the company manuals and paper rtow... Both now on EFB also.
PT6A