1.The seat belt sign turning on
2.Someone wearing a neck pillow
3.The snack cart coming down the aisle
4.An airport shop with very expensive water
5.A moving walkway in the airport
6.Someone sleeping before takeoff
7.Someone running to catch a flight
9.A flight attendant giving the safety demo
10.Someone reading a real paper book
11.Someone in matching travel outfits
12.A dog or cat in a carrier bag
13.Someone eating airport food at the gate
14.A beautiful sunset or sunrise from the window
16.Someone who fell asleep on a stranger
17.A child under 5 years old
18.Someone wearing noise-canceling headphones
19.A big departure/arrival board
20.A very long security line