The language maps in this series are great to carry along during the trip. They're portable, inexpensive, and contain pretty much anything a traveler might need to communicate. They were great last time we were in France and Germany. Click on the maps to take you to Amazon where you can buy them.
Mo also has been using this app to re-acquaint himself with German. He used Duolingo two years ago, and it was fine, but he likes Babbel so much better.
Try it out!