My in-flight comfort and entertainment items for easy and efficient 1-bag travel

My in-flight comfort and entertainment items include the following:

• Noise canceling (not just noise reducing) earbuds. I’m sure those big Bose noise canceling headphones are awesome, but I was looking for something much more portable, and the Audio Technica QuietPoint buds did the trick for me.
• External battery for my cell phone. I have a couple of sleepy time playlists which, in combination with noise cancellation ear buds, greatly facilitates airplane naps. When I’m awake on a flight, I’m usually watching a movie on my phone, playing a game on my phone, reading newspapers and blogs or books on my phone’s Kindle app. For flights longer than 3 or 4 hours, it’s good to have backup power.
•  A sleep mask – you can pick these up at a drugstore, or you may have a couple of freebies you picked up from previous cross country or international flights.
• Inflatable neck pillow, so you don’t end up snoozing and drooling on the passenger next to you. These things actually give me a huge pain after an hour or so of use, so I’ve experimented with both the Travelon 1^st Class Sleeper, and the ridiculous looking Travelrest Ultimate Inflatable Travel Pillow .   I like both of these products better than the neck pillow, although both take up a bit more space and both are a bit goofy looking, especially when you’re inflating or deflating them.
•  Collapsible water bottle (like Vapur or Platypus). The half-liter model fits easily into the travel vest. It is my goal to fall asleep as the plane is taking off and to get in a good 15 or 30 minute nap before a long flight. That often means sleeping right through beverage service. In fact when I do sleep through beverage service, I consider it a huge win. I’ll be much more fresh and rested for any reading or work I want to do on the flight, and I’ll feel better upon arriving at my destination. But you want to stay hydrated in-flight, thus this recommendation. Fill the bottle after you go through security and before you board the flight. Oh – and try to book an aisle seat. If you are drinking enough water to stay appropriately hydrated for good travel health, you will probably be using the airplane restroom a couple of times on even medium length flights.
• Trail mix or nuts. Some portable and high-protein snack to get you through a longer flight and provide greater nourishment than airplane pretzels.
• Optional: for overnight flights, a silk sleep sack or lightweight sleeping bag liner provides an alternative to airplane blankets, vaguely simulates the feeling of being in bed, especially when paired with the 1^st Class Sleeper or the Travelrest Pillow.

     And you?  What are your secrets for tolerating coach, getting work done onboard, and enjoying a long flight?  Share your tips here, and get more of mine in my "Guy's Guide to 1-Bag Packing: Minimalist Travel Secrets That Save You Time and Money" at Amazon!