This is about as wabi-sabi as it gets: A flimsy galvanized pail, made sturdy with a lining of concrete, which is in turn lined with, and finished in, terra cotta. A hole in the side for a little charcoal and a removable chunk in the fired clay to control the draft, and you have a charmingly rustic, and extremely efficient little outdoor stove.
It’s perfect for wok cooking outdoors, as is. With the addition of some sort of grill – an oven or fridge rack will do, but a replacement or repurposed circular rack from a Weber or similar small BBQ is even better – it is also perfect for grilling.
Or just use it to take the chill off the air.