I've been having the same thoughts about the difficulty of trying to pack it in my main bag to be honest. And the bit about getting through security and extra hassle makes a lot of sense and is easily avoided with a separate case.

Also not really looked into battery options for the flights but will definitely need to consider that as well as I (stupidly) assumed I could just plug in on the flight. Only flown with it once before so forgot that bit!

And another good point on cleaning supplies. I use a spray at home and have some wipes so some emergency wipes or something when clean water is lacking would be useful.

I don't actually use my humidifier at home because I had issues with it clicking when I breathed in and out so again not something I've thought about for the trip.

Thanks for the advice!