A clip to secure trays in a stack including a platform, rails coupled to the platform to mate with tabs of at least bookending trays in the tray stack when the platform occupies a brake position thereof relative to the stack and an elastic brake element coupled to the platform and configured to be biased against the stack when the platform occupies the brake position to increase a mating friction between the rails and the tabs, the elastic brake element being actuatable against the bias to permit selective movement of the platform to and from the brake position, the selective movement solely actuating the elastic brake element.