A while back I had the opportunity to purchase several railroad carts (also called factory carts, industrial carts, Nutting trucks, Lineberry carts, etc.), which were used at one time to move goods around factories, warehouses and train yards. The four that I got came from a local planing mill that was going out of business after 4 generations of family ownership, and refinishing them was a fairly simple process, albeit one that was incredibly labor intensive. For fans of industrial antiques, these carts work pretty well as coffee tables, and with some modification, kitchen islands and table tops.
During a trip my local architectural salvage guy's warehouse I dug through his vast collection of old floor grilles, most of which were super ornate and in super rough shape, and bought a couple. The idea was to build a couple simple end tables and inset the grilles into the top, mimicking how they might have looked when originally used in floors. Poplar was used for the table legs and aprons, and the tops was built from lumber that came from an old pine door I pulled out of a dumpster at a nearby house rehab,