This has been helpful since Kam was 4 months old for arm movement and tracking. When he would move his arms even accidentally and hit the toy he would start to connect it together. And visually would help him focus. I bought the black and white separately for his visual. It also chimes. Itβs a bit annoying at times, but when it chimes Kam knows he moved it.
They Wooden Gym already comes with 3 Light Wood hanging rattles, but thatβs hard to see if someone has CVI.
Here is a link to the contrast hanging rattles if interested.
https://www.amazon.com/dp/B081CNR7F2/ref=cm_sw_r_cp_api_i_SF6CR9Q76C68B7ZBBP8C?_encoding=UTF8&psc=1