Another common (?) mod is to make one from an ammo tin......(Simon, again!)
(46) Ammo Can Wood Burning Tent Stove. Make a Tent Heater for Winter Camping. - YouTube
Yeah thank you, I’ve made few of these in the past! Possibly if you go through the search option you might find some of mine haha.
(Though it is Simon, this is one of the better ones I’ve seen anyone make tbf!)