Shipping containers originally came in a variety of different sized, and made from a number of different materials. During the early days of seafaring, shipping containers were usually wooden casks or trunks often fortified with iron bars around the edges. These early containers were meant to store a number of different items, from foodstuffs, spices, beverages, and other accoutrements.
Summary:
Shipping containers are sometimes the smartest and the easiest way to transport.