Traveling internationally may entail a completely different strategy when packing your bags.
For example, when I travel domestically, I usually pack a few granola bars and/or read-to-eat snacks just in case I get hungry. When I travel internally, I refrain from bringing any food products as most countries will want to do a customs inspection on anyone bringing in food or animal products.
Here's a quick list of items to bring:
- Prescription medication in original containers. Any medication you bring with you should be clearly labeled as to its contents. Anything that is questionable could be confiscated by authorities.
- Photocopies of your travel documentation (passport, visa, reservations), driver's license, and credit cards. I also scan in my travel documentation and upload it to a secure online location.
- Charging cords (and proper AC adapters) for your electronic devices.
- Mobile Device - Even if you don't plan to pay roaming charges for your mobile device, it can still be used over WiFi and/or as a travel alarm clock and calculator.
- Unlocked Mobile device - If you are going to be traveling for a while, you may want to invest in an unlocked device and purchase a SIM card for local use. If your current mobile device is 'out of contract' then you can request the 'unlock code' from your carrier. It is a good idea to let your carrier know that the reason you are asking for the 'unlock code' is for international use and not for use with a competitor.
- Travel Converter/Adapter Set
- Hand Sanitizer
- Pens & notepad - You will need to fill out customs forms on the plane. Don't be that guy who didn't bring a pen.
- Digital Camera and memory cards
- Walking shoes - Comfortable shoes. There will be walking on your trip.
- Appropriate Clothing
- Toiletries
- Umbrella/Poncho/Jacket - Appropriate outerwear depending on where you are going
- Pocket-sized tissues and/or disinfecting hand wipes
- Swimsuit & flip flops- Even if you are going to the coldest place on earth, there is usually a hot tub at the hotel. Depending on your hotel, you may decide to wear flip flops while you are in the shower.
- Backpack / small bag to carry souvenirs while walking around
- Moneybelt
- Expensive jewelry
- Clothing that screams, "I'm an American." You want to try to blend in.
- Shoes that scream, "I'm an American." Again, you want to try to blend in.
- Your Hairdryer - Hairdryers are notorious for being the wrong voltage and/or blow up your conversion adapters.
- Food products
- Any contraband / prohibited items by the local authorities
I previously recommended bringing toilet paper, but I have not used that item on my last 5 international trips.