Included are several variations of the geometric planter/container from thing: http://www.thingiverse.com/thing:788448.
The variations are between a isosahedron and a dodecahedron using different parameters. I also created different openings depending on the shape.
These are scaled to print at 110mm (roughly).
Depending on the shape, some will print with the opening facing the bed platform and others with the opening facing up. Support should not be needed if oriented correctly.