The half gallon of ice cream is easy to spot. It went to 1.75 qts, and then to 1.5 qts. Soon, 1.25 qts.
I’ve already seen 1.25qts of ice cream in the grocery stores.
Orange juice, too. In the past five years or so, a half gallon has become 52 ounces. They can't shrink it too much more before they'll have to start shrinking the quarts, too.
Remember the pound of coffee? You can still find it, but there's many more 10 ounce and 12 ounce packages.