Must have

Passport
Driving license
Withdraw cash
Credit card
Phone
Wallet
Bookings
Insurance

One day before

Charge devices
Check in on a flight
Download movies or series
Download necessary mobile apps

Just before leaving

Turn off devices
Turn off water
Make sure no garbage left in a house
Close windows

Clothes

Underwear
Socks
Sleepwear
Accessories
T-shirts
Trousers
Jeans
Hoodie

Electronics

Phone charger
Powerbank
Earphones

Medication

Antihistamines
Painkillers
Diarrhea
Plasters
Cold and flu

Miscelaneous

Sleeping mask
Sleeping pillow
Small bag

Cosmetics

Lip balm
Perfume
Eye drops
Manicure set
Hand cream
Wet wipes
Deodorant
Razor blade
Shaving foam
Wet wipes
Toothbrush
Toothpaste