Semi-related, one comparison I'd like to see is pre-sliced fruit in plastic containers versus the whole fruit.

These regularly get attacked as signs of how wasteful we are (which I generally agree with) and people defend them because people with various kinds of physical impairments might find it hard to peel a fruit.

But I think if you recycle the skins/seeds/waste properly in a factory, wrap it in lightweight plastic and account for the reduced shipping weight, then you might come out ahead even if you ignore the benefits of eating more fruit.

One of the many complex decisions that a carbon fee might simplify by guiding people towards doing the right thing at every step in the process.