Amee Patel, Founder, AMPR
Neck pillow
I bought this after finding out I had the middle seat in a 13-hour solo flight to Texas where I knew I wouldn't have anyone's shoulder to snooze on. It was a total game-changer. It stops that dreaded chin-to-chest drop which wakes you up every time you try to fall asleep sitting up on a plane. It's a little bulky but has a clasp so you can attach it to your flight bag.
J-Pillow, £18.95, available at Amazon
New York Times crossword app
Despite best intentions to settle in on a long-haul flight and read that book you've been putting off for months, more often than not, you actually just want to veg out with eight episodes of the Kardashians. But for the long, long-haul flights, when you've watched too many Zac Efron films and are in need of a little brain stimulation, I recommend the NYT crossword app. It's something like £3.99 per month and you get the entire archive and can pre-download them before a flight.
NYT crossword app, available at iTunes
Aesop hand gel
After one too many times getting sick immediately after getting off a flight, I am now obsessed with cleanliness on a plane. Some things you have to just put up with, but hand gel tends to get you through: I use it after the bathroom, during films, after eating. Many gels contain a lot of alcohol and can dry your hands out, but the Aesop one is kinder to skin.
Aesop hand gel, £7, available at Aesop
Lounge pants
I recently read a fiercely argued debate between Condé Nast Traveller editorial staff about whether it is acceptable to wear pyjamas on a plane. An all-out pyjama may be a little too far in front of 300 people you've never met, but no one wants to be wearing jeans for 11 hours in a static chair. This is where you can indulge a little by basically buying the nicest pair of lounge pants you can – something with a little cashmere, or silk if you're flying to somewhere hot. If they're a little tailored, even better; you can stay in them if you've got a layover somewhere and not look like a woman in her pyjamas. Mine are from Uniqlo.
Lounge pants, £19.90, available at Uniqlo
Heating eye masks
My friend recently flew halfway around the world in two weeks and came back raving about these self-heating eye masks from Japan. They work like hand pocket-warmers: once you open the packet and put them on, they start to heat up. These aren't pretty but they really do the trick in helping you feel relaxed and ready to sleep. If you can, get the ones infused with lavender for an extra treat.
Optrex warming lavender eye mask, £9.99, available at Boots
Noise-cancelling headphones
Everyone would suggest these for long haul. I think their best use isn't actually for watching films, but for when you want to sleep – by putting them on, you drown out some of the residual plane noise, which makes you feel calmer. They don't have to be expensive, either; I picked these up in an airport shop recently.
Sony noise-cancelling headphones, £22, available at Amazon