This is a very simple and easy to print pencil case.

The outside dimensions are 180mm x 45mm.

Simple_Pencil_Case_Top.stl … the gap between the top and bottom part is 0.1mm.

Simple_Pencil_Case_Top_Tight.stl … the gap between the top and bottom part is 0mm (works well on my X1C).

You can experiment with different plate textures (smooth, satin, textured, …) to achieve nice finish. In my case the light geen lid is printed on this PEO sheet.