The things travelers shouldn't leave home without, according to a poll of the Society of American Travel Writers' 500 writer/photographer members:
1. Good walking shoes.
2. Photocopy of opening page of passport (carry separately).
3. Ziploc bags.
4. Immodium (for diarrhea).
5. Photocopies of prescriptions for medicine/glasses you can't do without.
6. Swiss army knife.
7. Pocket flashlight.
8. Spare camera batteries.
9. Your address book.
10. Photocopies of all credit cards (carry separately).