Ten years ago, in a knife store, I saw a knife block that was like this:
But it was just a wire frame. The advantage, especially in our humid (moldy) climate, is that you could put a knife in it when it was still wet, and it would air dry.
It was $50, so I didn't buy it. Now, I'd like to get one, but I've searched high and low with no luck. Anyone seen anything like this?