The cabinet is there for you to put some of your stuff in. The manufacturer really doesn't care what stuff you put in which cabinet.
In the various upper cabinets in the living room area of my motorhome, I have...
- cleaning and misc. chemicals (in a sort of magazine rack like compartment above the entry door)
- DVD player, remote, and DVDs
- board and card games
- books and manuals
- a box of road maps
- paper and a manual typewriter