These Lego blocks are actually storage boxes – OddGifts.com
Amazon.com: Plastic Storage Organizer for Lego Box Kids Child Toy Stackable Containers with Lids Bins 3 Layers Adjustable Compartments Building Blocks Chest Case : Baby
LEGO storage brick drawers review
LEGO® Storage Box 4 Knobs, Medium Stone Grey - Room Copenhagen @ RoyalDesign
OFFICIAL LEGO BRICK STORAGE DRAWER 4 RED FOR DESK STACKABLE | eBay