Here are three containers for the office; a pencil holder and two small containers for paper clips, rubber bands, etc.

They are based on an epicycloid with 5 cusps and essentially use the same openSCAD code as that included with thing:218657 - Plane Curves as Mobils. The bottoms of the containers are decorated with pentagrams.

Stl files are:

Pencil_holder.stl
Bowl.stl
Cup.stl

Open_scad code is included.

The files can be printed directly on the build surface.