I loved the box which be uploaded by Fix3D, but unfortunately, it should be with a rubber or the silica will be easily splashed.

So i re-designed the box with the ‘snap-fix’ structure, which can hold the cap of box. Then removed the stiffener.

It also can be updated with the angle of two bevel edges, it's better to be 90 degree.

Please be free if you meet any problem while printing this model~