One of the best Industrial tables I've seen comes from an old recycled wire spool. Here's a great DIY on making one yourself. We've all seen the large wooden spools loaded with wire next to an open trench. These large cable holders are built tough for industrial work and last for a long time in the field. But once their duty is done, new life as a table (or stools for the smaller ones) really give the weathered wood an excellent purpose.
Finding one these spools is no small feat, but if you know where to look they're out there. Look around for industrial yards that deal with large cables or wires and there may be a few battered spools in the corner. Here is the full tutorial on how they made theirs into a great industrial table.