Scan your passport and any other travel documents you use and give them to family members or friends. Make sure you can easily get in touch with them. Also, email a copy of your itinerary to them. This works in case you lose something or in case of a disaster, when they need to know where you are.
If you are traveling to a new country, check out where the embassy is located. It's much easier to have the address in your phone or in your folder of documents than it is to try and find it in an emergency.