My Root box is quite big, because it’s the french edition so it includes the Root automatons, and the first expansion (Lizards and Otters).
I think the smallest box i have is Complots which is a french version of Coup, with squared cards, it fits in one hand.
I avoid giant boxes of minis so my biggest is A Feast for Odin. With the expansion it’s a pretty full box and I love every bit of it.
Smallest is probably Squire for Hire or Dragons of Etchinstone. Small deck games like the Buttonshy ones but in more compact folding envelopes. I also have a few Pack O Game games: DIG, ORC, BUS, maybe those are smaller by volume.