While watching an episode of Sam the Cooking Guy, (great channel for learning how to cook random stuff) a product was demonstrated called the Nomad Grill and Smoker.
Obviously this product would have limited use while camping or overlanding but I can think of plenty of places where it might be useful. Especially in the current climate where open fire places are prohibited but something like this could still be used.
The price is absolutely absurd, of course. Especially when you can buy a semi-decent offset smoker for $200 and they are asking $650!
Still…portable, easy to use and has everything you need to get the job done.