I believe any chair that doesn't have a back part can be used to place itens on top of them. So every stool and other chairs like the museum chair, octopus chair, etc.
I know that the cardboard chair allows items to be set on it now, which makes sense considering it's basically the exact same thin as the cardboard box lol. But yeah I guess your best bet would be chairs without backs, though idk how many of them allow it