Visible crew/equipment: Throughout the movie, if you watch closely you can see the zippers on the backs of the Eye Creatures' costumes pretty easily.
Visible crew/equipment: Near the end of the film the Eye Creatures are seen coming out of the woods. When you watch the scene, one of the people playing an Eye Creature is shown walking with nothing but the Eye Creature head appliance, black clothes and sneakers.
Visible crew/equipment: When Stan and Susan are talking in the car, during their conversation the scene cuts to one of the Eye Creature's severed hands moving in the back seat. You can see the string tied to one of the hand's fingers, to help make it look as if it is moving.