Unless you count things like “on top of stalagmites” as sitting methods.
From Blackadder:
Aunt: ‘Chair’? You have chairs in your house? Edmund: Oh, yes. Aunt: [slaps him twice] Wicked child!!! Chairs are an invention of Satan! In our house, Nathaniel sits on a spike! Edmund: …and yourself...? Aunt: I sit on Nathaniel—two spikes would be an extravagance.
From Blackadder:
Aunt: ‘Chair’? You have chairs in your house?
Edmund: Oh, yes.
Aunt: [slaps him twice] Wicked child!!! Chairs are an invention of Satan! In our house, Nathaniel sits on a spike!
Edmund: …and yourself...?
Aunt: I sit on Nathaniel—two spikes would be an extravagance.