Where are you going?
Take pic of your passport info page
Bring like $40 usd for emergency (I only do this when the country requires me to pay for visa on arrival)
Don’t take taxi with the first person that comes up to you at the airport. Walk around a bit
Don’t walk around with your passport on you. Leave it at hotel or wherever you’re staying
Bring a pen on the flight with you in case you have to fill out custom forms. Most flights won’t give you a pen and most people don’t bring one. Is also a good opportunity to talk to girls if you’re sitting next to them and they need to borrow your pen
Try and get SIM card before you leave the airport. It’s usually really hard to get a SIM card when you leave
If you have a laptop don’t put it in checked luggage, bring it with you on the plane. I learnt this the hard way on my trip to Egypt and it was broke when I got to my hotel.
I can keep going just let me know what country you’re going to