We've been very happy to use this organizer for my five-year-old's Legos. It's easy for him to slip the cases in and out and to open and shut them, although one lid kept popping off. You can pick up and move the whole unit after the drawers are filled, although you have to be somewhat careful. I'm hopeful this unit will last a long time, as it seems a great quality for the price. Also, the cases are maybe 2 inches tall, which holds a good amount of product, and are large enough overall to hold typical square baseplates as well.