Any Suggestions?

The couple I have been tutoring in Japanese since last fall will be moving to Japan next month. They plan to stay there for several years. I'd like to get them some kind of going away present, maybe a book that will give them some helpful advice about living there, or something that might help them and their two little girls get settled. If you happen to have a dictionary, a book or a guide you found really helpful for acclimating to Japan, please leave me a comment. Most anything I ever read on the subject was published in the 80s!