I posted this video sometime ago. I have found that at the turn of each season, the Family Dollar Store has these small light up balls in bright colors that will light up when shaken. They are just the size for small hands. I suggested using them against a black background or for teachers of severe profound impaired children with cortical blindness. I even suggested that the teacher invest in a black apron. Since the lights from these toys blink rapidly there may be a seizure inducement concern for some children. I would not allow children who puts things in their mouths to handle these toys. A teacher will use some discretion base on the needs and conditions of his/her students.