Eyes In The Dark contains a blinking eye sprite which is customizable (blink count, blink timing, visibility, always rotate to camera,, etc...) with a script. No programming skills are necessary to use it. The eye sprite can be exchanged easily.
Simply place the eye prefabs into 3D models like bushes, trees and be surprised how fast it breezes life in your environment.
The packages contains a script, eye textures, prefabs and a demo scene.
Watch this demo video on YouTube to see it in action.