It would depend on whether you are talking about one of those 3-pack boxes they give kids in the restaurant or one of those crayola boxes with 40 shades of blue and a sharpener built in the back.
You want to pick a unit of measure that is close to the weight. The little box is on the order of 5-10 grams and the big box is on the order of 0.5 to 1 Kg.
It is not incorrect to give the distance to the next town in inches, just awkward.
Answer: Grams.
kilograms
kilograms
kg
you can't use kilograms to measure a orange, but you can use grams.
Kilograms.
Kilograms
Kilograms!
Kilogram
kilograms
grams
Grams or ounces