Some cookers are pretty basic. All have a fire pit mounted on a trailer. Some use wood, some use propane with wood chips. Almost all have a temperature gauge.
Other cookers have everything, including the kitchen sink. This one has two cookers, several burners for kettles, a refrigerator, sink and many other features.
An innovative cooker solved the problem of grease that is distilled in the smoke. It drips into the cans. Even when the lid is up, it still drips into the cans.
Beach music lovers carry their own with them. This player is installed right into the cooker.