Dr. Meter Luggage Scale, $7 with code L54X8JQT

All this 4.5 star-rated luggage scale has to do is save you from an overweight baggage fee once, and it will have paid for itself several times over.

You might have a bathroom scale at home that works just fine when you’re leaving town, but this one is small enough to take with you, so you can make sure you won’t get dinged for all of those heavy souvenirs on your return trip.