Best wooden: Large Wooden Box with Hinged Lid Best archival: Hollinger Metal Edge Photo Storage Box and Envelopes Best for large prints: Lineco 22×30″ Archival Print Storage Box Best plastic: ArtBin ...

For this DIY, you'll need two identical large-sized boxes with lids to create the organizer. Keep in mind you can use any sized boxes you like -- it just depends on how much you want to store.