Students at Washington and Lee University have found a use for the penny. They put pennies on the grave of Robert E. Lee’s horse Traveler. They put the Lincoln side face down, but put quarters and nickels face up to honor Washington and Jefferson. Supposed to bring the student luck, I think.
I don't know about luck, but it certainly makes them poorer.
I strongly suspect Washington would have more respect for Abraham Lincoln's political behavior than that of Jefferson Davis. He knew that there was a larger world beyond the slave shack.