Queenstown New zealand Highlight
Some other suggestions, although not necessary - Travel pillow, chewing gum (especially for those who have ear problems during flight), book and/or ipod and one change of clothing (air lines do lose luggage occasionally)
Make sure you try currywurst in Germany. It's basically a hot dog with tomato sauce (ketchup) and curry powder. Tastes brilliant and only costs 1 or 2 Euro.
A great way to spend the afternoon in Paris? Grab some cheese, a baguette and some wine from the shops on the Champs Elysees and head down for a picnic in front of the Eiffel Tower!