In-Flight Essentials

Airplane seats and long flights are never fun. Whenever I travel there are certain essentials I must have with me on the plane.

Gum [birthday cake was a must in honor of my upcoming birthday]

Pens & a notebook [for random thoughts/notes; not to mention, you always need a pen for customs]

Magazines/reading material [entertainment]

Snacks [airport food is overpriced and overly processed]

Neck pillow [I try to sleep as much as possible on flights]

Water [flights are so dehydrating]

What are your in-flight essentials?