- Glass ball performing such as [here](https://www.youtube.com/watch?v=Av0tAyxxUic&t=2m0s).

- Gym training with small weights such as 1kg and 2kg.

- Better relaxation such as cold paths.

- Playing with smaller balls and balls of different weights

- Better hand-eye-coordination, more [here](http://sports.stackexchange.com/questions/50/recommended-drills-to-help-keep-your-eye-on-the-ball)