Hi All!
I'm new to the forum--though not to soap making.
For my trial soaps (testing FOs/EOs for discoloration, scent longevity, etc.) that I store for a year or more, I put them in the equivalent of pizza boxes. That way I can write their identifying info by each bar and store the boxes several layers/boxes deep on a shelf in my store room. (I use cavity molds for my trials so each "bar" has its own FO/EO.) Every month or so, I pull them out, inspect them, make notes, and back they go onto the shelf.
For my pretty soaps (in which I want the scent to last as long as possible and that I use as gifts), I put the soaps in 3" x 5" cello bags from Paper Mart, stick a label on them, and put them in a cardboard box. I either put a Post-It on the box that tells what the content is, or just write on the box with a Sharpie.