Sphericon (hexa base)

Print twice 2x_sphericon_hexa.stl flat face down
no supports
Print from two to six 6x_glue_sphericon_hexa.stl flat face down

See sphericon_hexa_assembled_dont_print.stl : that is how it is meant to be assembled.

That thing rolls in a funny way

If you have a little elephant footing on the plugs, good. Push the plugs foot first in one side. They will lock. Don't really need glue. It seems to hold as is.