It should be possible for a skilled carpenter to find a way to use genuine used whisky casks to make a cabinet. There are a few different ways you could do it. The casks come in different sizes depending on their original contents (bourbon, sherry, port pipes, etc.) I was actually thinking of commissioning a simple cabinet from a sherry cask.
Check out this designer- they may be able to do a one off for you.
How many bottles are we talking here? There's a big difference between 30 and 200.