This is Rolli the Hausgeist or enclosure ghost actually.

Print instructions

Rolli the ghost rolling its eyes over extruder loading actions:

There are two files:
One for the white parts including the face, teeth and irises for Rolli.
One for the black parts including the back cover and the eye balls.

You need an 8x5mm magnet to connect Rolli to your extruder Motors rotator.

1. Glue the magnet into the white gear. Superglue works best for me.
2. Put it through the black backplate and try if it moves freely when put onto the Extruder Motor.
3. Glue the irises into the eyeballs
4. Put the eyeballs onto the backplate and snap the face onto the backplate
5. Again, make sure everything moves nicely.
6. Snap Rolli onto the extruder motor
7. Let Rolli do it's spooky magic

I hope you enjoy it :)