I was thinking of a spider, the size of a tarantula, that has a human eye pattern/design on its abdomen. Upon seeing the eye, the organism will enter a state described as hypnotized. During the trance, the organism does things that will only benefit the spider (finding food, moving it around, sheltering, protecting, etc) After the spider is done with the organism, it will stop controlling it and the organism will enter a state of unconsciousness for a few hours.
I was thinking that the Containment method could (partly) be a terrarium with reinforced glass and a 3d printed "shell" fitted to the abdomen to cover the eye.
I would add more information like a description and as if some tests were made to the spider.