You have spent money for a plane ticket, extra luggage and a glass of wine on the plane, but these things will not cost you a single penny.
Parents also have to go to the toilet. If you are traveling alone with a child, do not hesitate to stop the flight attendant and ask them to look after your children. For some, this will not be a problem, but a desired respite from the usual obligations on the plane.
Do you want to see what the cockpit looks like? Ask the flight attendant for a brief tour, but preferably at the end of the flight, when the pilots have finished their work.
Because the bacterias in airplanes are everywhere, it is not surprising that many people catch a cold after landing at the desired destination. To prevent the possibility of getting unpleasant diseases, ask the flight attendant for a wet handkerchief and wipe the armrest or the movable dining table with it. Most airlines have such handkerchiefs, so they will provide them free of charge on request.
Do you have a blister? You can get the patch for free from the staff on the plane. Some airlines will also offer you a headache pill if you forgot to bring your first aid kit with you.
Extra packet of peanuts
If your stomach rumbles after eating your free bag of snacks, ask the staff for a rehearsal. If they have a surplus, they will surely give it to you at no extra charge.