Simple Storage Box

I’ve been using stackable, large MUJI storage boxes in my office, but unfortunately, I couldn’t position two boxes side by side, leaving a lot of unused space. So, I designed my own storage box with the following requirements:Minimal thickness: It will only store cables and stationery.Complex rounded corners are unnecessary: It will be placed in the back of a cabinet.Stackability isn’t required since the cabinet’s height is limited.It took about five minutes to complete using TinkerCAD, although I’m not sure why I couldn’t exceed a 20cm dimension. Finally, I can take those MUJI boxes home.