Fishing for salmon up north here, we use tinsel flies, which are anywhere from 2-4 inch.
I purchased a couple of Plano boxes 3700 deep series with round tubes in them, which
allows me to store each fly individually. The boxes contain two rows of tube, numbering
about 48 total. This might be something you can put together yourself. The small tubes
might be available at a craft store like Hobby Lobby or Michael's. Hope this helps.
Tight Lines and be safe out there! Dave