The best thing is the game code to accommodate part of this option this already exists. Just re-use the Accessory section from the initial character creation screen. Ok, or the Shrine of Illusions for those people who must restyle themselves. Who are certainly not me. Well, not every save at least.
Seeing as we recognize different Farmers in the game (OK and IRL) by their faces, this set of accessories could really help for the animals. I want a goatee for my Pigs to keep their wittle faces warm (not much you can do about those cold butts, though) and clearly Ostriches should have a Monocle. Or Mutton Chops. Which aren't in the game yet, so get on this CA!
But this is a purely functional addition of course because my stinkin' Ducks keep getting stuck far from their Coop and I need to exit the screen before they sheepishly flap their way back home while I'm gone. Embarrassed they can fly or something, maybe they made a deal with the Chickens to share accommodations as long as the Ducks don't go all aerodynamic on them. Perhaps with a pair of Glasses they'll be able to see the Coop from the ground better and waddle their way home more consistently.
No, my sheep don't fly, why do you ask?