Buy to the standard, not the picture
The storage guide sets the standard these searches shop against: individual compartments, unbuffered acid-free tissue for safety across materials, and boxes sized so nothing presses on anything else. Listings love the word "archival"; the guide tells you what the word has to mean before it counts. For the small hardware, the caps, hooks & hangers guide covers what fits what.
Before you buy
Two rules from the care wing pay for the whole errand. First, buffered and unbuffered tissue are different products, and the safe-across-materials choice is unbuffered; a listing that doesn't say which it is hasn't earned the word archival. Second, the box exists to stop movement and contact, so measure your largest pieces before believing any case's "fits 48 ornaments." The rest of the doctrine, with its museum sources, is in Storage and Preservation.