Lipstick cameras, one on top of the passengers instrument panel shroud (eyeball), one inside low and oblique (kneecap) looking up @ passenger and the outside view over the shoulder, tip of the vertical looking forward wide angle, wingtip topside looking inboard, wingtip lower (wide angle) watching the gear cycle/flaps up-down. that way two or three simultaneous views can be split screened so you see a roll or loop from straight on, up and over, fin tip, and outside, that and a microphone for the chatter/reactions would really enhance the passengers memories and experiences.