Saw this idea online using food cans. Started collecting, then discovered that most cans today have a bottom that I couldn't figure out how to remove.
So, quite by accident I noticed that these 375ml bottles fit nicely in a pint size paint can.
Craig's List find + scrap lumber + hot glue gun + creative installation in my old basement = mini bottle storage. The board underneath was because I was afraid it would sag over time.
My back-up plan was to turn the bottles upside down in their original boxes. That would have worked just as well but I needed a project!