Do bees make honey from fallen fruit?
The substances that bees consume do end up in honey. There was a high-profile case in Brooklyn in 2010 (The Mystery of the Red Bees of Red Hook) where bees from several hives began producing red honey after feeding on dyed maraschino cherry juice from a local factory.

A follow-up article from 2015 (How Bees Revealed a Pot Farm Beneath the Maraschino Cherries) claims that the substance they began producing was not honey but “red gunk”; however, that may have been editorial license.