Servos: SG-90

Repository with code (ESP8266 + platformio): https://github.com/positron48/servo-eye
Video: https://youtu.be/rwfGK6thx50

cthulhu-model.stl is a solid model if you just want to print a figure.
cthulhu-cutted.stl is a model with a cavity inside for placing electronics.
hull.stl is a cutout model that holds the electronics. You can model anything with one eye, cut this model out, and place all the components inside.

More projects and updates: https://positroid.tech
More exclusive content and real-time updates in my Telegram channel - https://t.me/positroidlive