12-Pack Large White Trading Card Storage Boxes - Heavy Duty Cardboard Game & Sport Card Holder for Toploaders, Shipping, Collectibles - Perfect for Organizing Pokemon, MTG, Yu-Gi-Oh Cards (12pcs)

These boxes are good for cheap card storage and better that cardboard boxes to me anyways. They come in a really thin box because they are flat when you get them. At each corner of the box there is a triangular piece of plastic covering the adhesive that holds the boxes together when you fold them into shape. When doing this I would make sure that you hold each corner for a minute just to make sure that it sticks together and lower the chance of them coming loose. The magnets in the boxes are really strong so you shouldn’t have to worry about them opening by accident. The only thing that I wonder about is how long the hinged parts will hold up. Other than that these seem more sturdy than cardboard boxes and are cheaper than the fabric card boxes.