Not a packing idea but a security one.
Scan and email to yourself and a close friend/ family member all your travel documents, passports, itinerary, credit cards, drivers license etc. it may come in handy if you loose your documents.
Take rescue remedy with you. Great for lots of things. Take 4 in one medicated cream- get it from the chemist.
Take a small drawstring bag that you can hang around your neck and tick into your bra- good for keeping some cash in.
Blowup travel pillows are awesome.
Tale painkillers and any prescriptions and prescription medication with you.
Snap lock bags are very handy when traveling for food, jewelry etc.
Travel insurance.
Register your travel details online on the website below.
Organise a variety of ways of accessing your money overseas, such as debit and credit cards, traveller's cheques and cash
Register with your bank the period you expect to be travelling
Check with your bank whether your ATM card will work overseas.
http://www.smartraveller.gov.au/tips/travel-smart.html

Can I ask which country or region you are traveling to?