A bunch of fiber optic is a therapeutic tool for working in the sensory room. A feature of this fiber optic is that it is completely accessible to the child, in addition to touching it, you can wrap it in it, lie in it or on it, all this reinforces the improvement of the child’s psycho-emotional state. Additional directions of development using this tool are visual and tactile stimulation. A bunch of fiber optic has various modes of flickering light. Exercises with a bundle of fiber optic are recommended for children with autism spectrum disorders, mental retardation, speech impairment, anxiety, fear, impaired sensory information processing and physical impairment, including cerebral palsy, etc. A bunch of fiber optic is used in therapeutic work with adults with intellectual disabilities, dementia, anxiety and depressive states.