So I was thinking, it would be really neat to have a grain silo that I could load up with grain and pipes to connect the silo to piggy feeders. I could connect said silo to the piggy feeders, then the silo would fill the piggy feeders with grain as they empty from piggy feeding.
Think of it like the food reserve that you see in some dog/cat bowls, where the feeder is the "bowl" and the silo would be the reserve tank that fills the bowl as it empties.