In the old beast I burned everything, including a few old suits. 
Well, I still do in it sitting out by the firepit at the back corner of the yard. None of that ash making, chimney fire starting stuff in the one that replaced it.
A few years ago I burned cardboard out there in the old stove to demonstrate what happens in your chimney when you do that.
![[Hearth.com] Should I Burn That Pizza Box? [Hearth.com] Should I Burn That Pizza Box?](https://www.hearth.com/talk/data/attachments/153/153133-65511e98a1964c5ec3f4df08e6756860.jpg?hash=b4ZVRSj9c5)

Well, I still do in it sitting out by the firepit at the back corner of the yard. None of that ash making, chimney fire starting stuff in the one that replaced it.
A few years ago I burned cardboard out there in the old stove to demonstrate what happens in your chimney when you do that.
![[Hearth.com] Should I Burn That Pizza Box? [Hearth.com] Should I Burn That Pizza Box?](https://www.hearth.com/talk/data/attachments/153/153133-65511e98a1964c5ec3f4df08e6756860.jpg?hash=b4ZVRSj9c5)