I'm using these for my crafts, which I have a ton of. I bought the fabric cubes to fit these squares and they look really nice. The texture of them reminds me kind of a plastic drum? They seem extremely sturdy, I'm not going to put the heavier things on top but I think they can handle a little weight. I like these a lot. I bought the 11x11x11 boxes, which look a bit too small for them, so I'm going to order the 13 inch ones and see how that looks.