Plastic Boxes 50mm x 50mm x 19mm (Pack of 50) - Storage boxes
MATANA - 6"x4" Multicoloured Plastic Photo Storage Box Organiser, Includes 16 Cases & Labels - Great for Photo Viewing and Arts and Crafts Organising : Amazon.co.uk: Home & Kitchen
Green Earth Photo Storage Boxes | 700 Photos
Iris 12-Case 4" x 6" Photo and Craft Storage Carrier | The Container Store