Yes as Andy said, inflight announcements like the duty free. The announcements that play during climb or descent, so for example: American plays an automated announcement during climb and descent, If you’ve flown the zibo 737 you know what this is. This could be implemented in another box to tick and i guess could be triggered at 10,000 ft. You could add a folder called climb and descent to put these .wav files in.
Another additional suggestion is an announcement for border customs upon arrival on international flights. Again another folder and box to tick that could be called internat