As far as souvenirs from movie sets go, a jar filled with rocks may sound considerably less cool than a lightsaber or a suit of armor straight from Middle-earth. But for Tim Robbins, it’s a prized possession — one that was gifted to him a quarter-century ago after filming wrapped on The Shawshank Redemption. And it’s a present that perfectly complements the character he portrays in Frank Darabont’s beloved 1994 adaptation of the Stephen King novella. Sentenced to life in the titular prison fo...