Inspired by the sort of things that could have been but never were.
Who knows for what reason someone would don the disguise of a hare, or do the hares become people when no-one it there to see?
Squirrels don’t do all the work, sometimes they are helped by the Acorn Collectors, who walk beneath the trees gathering fallen acorns. When they have a plentiful supply the seek out places where oak trees should be, and plant them for the future.
Why a fairy would have blue legs is anyone's guess. I doubt if even the fairies know for sure.