Grammatical Post of the Day

As any grammar nazi knows, apostrophes are NOT used in plurals. A message with enough "apple's" and "orange's" can drive a true fanatic, e.g. the humble author, to screaming and frothing at the mouth. But at the same time, apostrophes are used to indicate eliminated letters, as in "o'er". So:

The plural of a word such as "box" is "boxes"...but would "box's" be a valid spelling, given that the apostrophe could indicate the eliminated E?