Assuming that any of you can afford to travel during the coming holidays (I know I can’t), you might care to check out this page of ScamBusters tips on airport scams.  The intro says “5 Most Common…”, but there is a lot of good information.  I recommend reading the whole thing.  Some of it is useful advice for any kind of travel.
The 5 Most Common Types of Airport Scams and How to Avoid Them