Each of these boxes has a close fitting top. The polygonal box has eleven sides and it's handle is topped by a dodecahedron.

Doesn't Matter

Doesn't Matter

The polygonal top is concave on the bottom. I recommend you put supports under this part of the top. My printer needed no supports for the dodecahedron, but yours might.

The geometry is generated in Grasshopper and the STL files are generated by Rhino.