Valid passport (even though you may enter Austria with an ID card, you need a passport to open a bank account)
Phone numbers and email addresses of emergency contacts at home
European Health Insurance card / private insurance documents
Translated prescriptions for medication you take and a fresh supply of prescription drugs.
Criminal record for school placements
Clothes and shoes suitable for cold weather in winter
Adapters for electrical appliances, if necessary
Favourite recipes and items for sharing your culture with others: music, photographs etc.