I travel often for work. These are the key items I use consistently on the airplane to make it all easier.
These are so nice for most planes, even if they do have a screen in front of you. It lets you put your phone right in front of your face, so no need to hold your phone or tilt you head down, hurting your neck or arms.
Airplane Phone Holder for Magsafe
This power bank is near the largest allowed in carry-ons and can power your laptop/phone for as long as possible. This is essential until all planes have power connections on all seats.
INIU Power Bank B63 100W 25000mAh Charger
This keeps you from having to use an airline's cheap headphones. This particular transmitter has the latest Bluetooth standard, receiver and transmitter modes, and can connect to two devices, so is flexible for more uses than just the airplane.
Bluetooth Transmitter
Thin back, so your head doesn't tilt forward, great support to help you sleep.
Neck Pillow Airplane Memory Foam Travel
For long flights, my legs usually get tight and feel bad from sitting so long. I like these because they use natural wool (no plastics!), keep me warm, and help my legs feel better when the flight is done.
Merino Wool Compression Socks 15-20 mmHg
Airplanes are designed to have very dry air. This is a trusted brand and is small enough to make it onto the plane. Works wonders.
CeraVe PM Daily Moisturizer, Dry Skin, 3oz
For long flights, it is hard to feel comfortable enough to sleep. This helps. It is washable, and weighted, which helps your face relax enough to sleep. Its great!
FACEMOON 3D Blackout Weighted Sleep Mask
You don't always need headphones on a long flight. Sometimes you just want to sleep or read without the noise. These are so comfy and small that it makes it easy to use on flights.
You need a good set of noise cancelling headphones for watching movies or listening to music/books/podcasts. These are solid with a very long battery life, which is key for long trips.
Soundcore Anker Q30 Hybrid ANC Headphones
This is amazing. It has everything you might need for a long trip, with labels, pre-filled, so you don't even need to find the medications in your cabinet before you leave.