"What's in your backpack?"
Spare CC including Citi Debit and 28degrees.
Ear plugs
Eye mask
Zip lock bag with qty toilet paper (don't travel in Indonesia without it!).
Lip balm, hand sanitiser and travel toothbrush/paste, all in 1L airport sized ziplock.
Small zip lock bag with basic meds
Pens, pencil, A5 current year diary
Pin generators for various banks
That's my daily use bag
. Sounds sort of like a woman's handbag now I list it like that...
Cables case, passport and foreign currency get added when it's time to go os and a bulldog clip will be getting added to my toiletries bag!
So to answer the OP: the minor thing would be the earplugs and eyeshade combo. And definitely only minor as every airline amenity pack has them.