It's...probably about the size of the cabinet I used to have at home. I think of it that way, at least.

If I want to hold something larger than usual, I have to prioritize. Like rearranging shelves or taking things out of drawers to fit new things in.

[As for most of the time... she hasn't really figured out how that works yet, just that there have been situations where people can "see" the items she's holding.]