When we bought our kitchen cabinets from IKEA, we actually purchased a different size for above the refrigerator than what we actually installed. This is probably better explained with photos...
You see the gap, of course you do, there's no way around it! You may notice that the cabinets to the left (the upper cabinets in the photo below) are slightly taller, and the original intent was to have 4 of those going across, to make up for the space above the fridge, but then we realized the refrigerator was too tall, and it would have involved adding a 6" base to these cabinets, rather than a 4" base like the rest of the kitchen, thereby raising all the cabinets on this particular wall. Which would have been fine, but with the desk space, we didn't want the cabinets too far out of reach, so we switched out the cabinets above the refrigerator.
So, we bought the smaller size and figured it would be a place that we could stash stuff. What we didn't count on was the interior (& thereby the sides) of the cabinets are birch, so it stands out like a sore thumb! We decided to put a piece of trim up there to close it in, but before we nailed it in, we tried it out for a while, and it seemed noticeably after-the-fact, as seen in the photo below. This is mainly because the cabinets are not pure white, they are more of a white-wash, so you can see the grain of the wood.
This is when Brian got to sketching and designed us a custom wine rack! YAY!
Then he drew it in CAD...
Then he built it!
So enough about the back story, let's get to the before & after shots!
So for the cost of the wood, we have a custom-built wine cabinet, and the ugly, gaping hole of shame is gone!