We have a small 5 compartment condiment holder that we put ice packs in to keep onions, relish, jalapenos, pickles and sauce in and we made up a coupe of units from 1/6 size pans inserted into 1/3 size pans. We also use ice packs on the bottom between the 1/6 pans and the 1/3 pan. We like this better because if not being used they stack onto of each other and go in the refrigerator. They are made by Cambro. The sandwich prep unit would be your best bet. You can purchase a 48” sandwich prep that holds 12 – 1/6 size pans.