Best Flat Storage Boxes

IRIS USA Portable Board Game Organizer Plastic Project Storage Case Box with Snap-Tight Latch, 6-Pack, Fits 8.5" x 11" Papers, for Games Puzzle Magazine Document Craft Hobby Art Supplies, Thick, Clear

IRIS USA Plastic Storage Bins with Lids 6 Qt. Craft Organizers and Storage, Art Supply Storage Organizer, Arts and Crafts Organizer, Stackable and Secure Latch, Clear/Violet - 6 Pack

IRIS USA 6 Qt. Plastic Storage Bins Containers with Lids, 4 Pack, Sensory Bin, Craft Storage, Craft Organizers and Storage, Organizing Container for Home, Office and School Supplies, Stackable, Clear

Budding Joy 90L Under Bed Storage Containers, Closet Organizers and Storage Bins, Foldable Underbed Storage Bags for Blankets, Towels, Comforter, Sweaters, Pillows, Linen Sheets, Wrapping Paper

HORLIMER 12x9x2 inches Shipping Boxes Set of 25, White Corrugated Cardboard Box Literature Mailer

Citylife 3 PCS Plastic Storage Bins with Latching Lids Portable Project Case Clear File Box Stackable Storage Containers for Organizing A4 Paper, Photo, Document, Scrapbook

ArtBin 6955RK Super Satchel 1-Compartment Box, Art & Craft Organizer, 1-Pack, Translucent Blush

ArtBin 6912AB Essentials One-Compartment 12" x 12" Box, Art & Craft Organizer, [1] Plastic Storage Case, Clear, 14.125" x 13.625" x 3"

Citylife 3 PCS 8.5 x 11 Plastic Storage Bins with Lids and Latches, Portable Project Case for Drawers, Clear Stackable File Box for Organizing A4 Paper, Letters, Documents, Art Supplies, and Crafts

Sterilite Large Clip Box, Stackable Small Storage Bin with Latching Lid, Plastic Container to Organize Paper, Office, Clear Base and Lid, 6-Pack