You proceed to the disguise chest, which really ought to be called a cabinet, and open the doors.
. . . There's not much in there, probably because you only recently discovered this room, and decided to bring the chest up empty. Bringing a massive chest up the trapdoor would have been pretty difficult if you had to worry about losing your dignity
and your stuff every time you fell off.
That said, you do have your own inventory to consider.
Even without the nigh-limitless carrying capacity of a HAT, your trusty COAT provides you with several interior storage compartments and two whole external pockets for quick and easy access like so!
You use your knife on the air, doing nothing.
Huh. So that's where that was.
Better drag that rug off of your trap door, in case you want to go downstairs.
You could go downstairs now, but are you sure you're done up here?