The many options discussed have different applications other than what I believe this thread originally targeted. While there are some great cooking grill options posted, many of these would not serve well as a fire pit. The washing machine tub is great for a big group, but then so is a 55 gallon drum with cut-outs. These are bulky and heavy and will not be easily transportable in most overland rigs. An ideal unit should be compact, lightweight, and durable. I do not believe there are many commercially-produced items that are ideal for this purpose. I would be curious to see if any enlightened person with metal fabrication skills has conquered this task. If so, please post pictures.
Cheers,
Greg