We built the kitchen Cabinet to have some storage access from outside Annie. For storage of stuff like Kya's (empty) water bowl.
I installed a shelf and the outside door. The shelf can be removed if desired.
The outside door latches with push-to-open magnetic latches. It seems to hold over bumpy roads.
Trimmed the whole thing with some cushy weatherstripping. In case this cruel world starts throwing slings and arrows at it.