Have you considered a full door-width cabinet in the corner, set
at a 45 degree angle? You'd use very little additional floor
space, and what you used would not be that usable anyway, in the
corner of butting cabinets. Yes, it'd be deeper than a regular
cabinet, but then that's where you'd keep the old Waring blender,
bottles you saved for some reason and other things you "store"
"somewhere." The cabinet top itself would be perfect for an
appliance garage, since there would be added depth for more
storage of "stuff." The same would be true for the upper cabinets
as well: perhaps a glass door for them to accent the storage?

Where it gets to be fun is if you build them yourself or have them
custom made. By flaring the sides of the corner cabinet out half
way to meet a similar flare of the abutting side cabinet, the
unreachable corners are less difficult to reach or manage. In
fact, I'd consider those full extension shelf glides mentioned
elsewhere for the base cabinet. You could store "stuff" on the
sides, while the middle, elevated, shelfs would roll out for even
better access- particularly to the back, or "V" area.

--
Nonny

ELOQUIDIOT (n) A highly educated, sophisticated,
and articulate person who has absolutely no clue
concerning what they are talking about.
The person is typically a media commentator or politician.