You can stow the rarely used items in it. Such as the chili pot that you only used in a super bowl on Sunday or your grand ma’s punch bowl or cake pedestals that you use only on holidays. Your deep corner cabinet is an excellent place to stow this item.
Or if it is the top corner of your Kitchen, it must be in a high position, and you can’t reach there without a stool. Now here is a smart solution for you. Edge the back of those shelves with fancy glassware rarely used.