I travel quite a bit lately, not as much as some, much more than many. One thing I do is that I am always (hopefully) prepared for is something going wrong.
Simple things like missing a connection and having to live off my 'carry on' for a day or two. Losing my luggage and having to work and perform with whatever I have with me... (a horrible state to be in at a remote site). And worse case, something goes terribly wrong with the conveyance I am traveling in.
This has only happened to me twice, a van I was traveling in as a work passenger rolled, no one injured praise the Lord, but it could have been serious. Another time, with my wife and newborn son, the truck we owned decided to die on a semi-isolated highway in an Alberta winter, praise God a passerby stopped and offered help.
I have been on two planes that needed to conduct emergency landings but the Lord's hands were there and both were so uneventful that in one case I am sure that there were some who were unaware at the time.
I always try to bring some snack food to eat and dress for the worst case, comfortable and warm and loose fitting clothing, footwear that can be 'walked in' being the most important, in winter carry something for the face, neck and hands.
As embarrassing as it is to have to many clothing items and 'stuff' when you get on a plane, it would be far more embarrassing to be short in an emergency. You can always take clothing off, it is very hard to put on what you don't have. There are many small compressible items available that will take very little room in carry on.
Just some thoughts, you will have to decide what is relevant for you. You never know when you may go swimming in the Hudson...
Travel safe. js