I recently came across an "Infinity Cube" with a height of 7mm and decided I wanted to modify my own model (partly because the hinges needed improvement). I took the plunge and tried to create a version with a height of 5mm; it worked out well, so I’m sharing it here.

Unlike the previous version, its small size means it prints successfully without any supports at all.

Once printed, bend the hinges one by one, flexing each side individually. Please be careful, though—since the parts are thin, the hinges might snap if you force them.