Thing is specifically but great

We have the ball for a few days. Our child is an "Action" -Baby and like it when what's going on. She loves the ball especially strong vibration, it is really motivated to crawl back and activate the vibrate, then they have to laugh out loud. She is now 8 months old and I think it is still far from what there is fun, especially when I think of it, that her 26-year old godfather has also played a lot with it .....