No More Cardboard: I 3D Printed a Case for My GM328A

My GM328A component tester worked fine — it just lived glued to a piece of cardboard. So it got a real case: modeled in Fusion 360, 3D printed, supports cleaned off, heat-set inserts pressed in with a soldering iron. Inside is its own power: two 18650 cells in series (2S) with a BMS and USB-C charging on an IP2326 board. Four clear feet, and the cardboard is gone for good. What should get a case next?