A nice effect to add could be particles splitting into smaller particles when bouncing (not by default, it should be an option).

Aside from enabling or disabling the effect, also the split size and number should be configurable something like:

split: {
    enable: true, // or false
    size: 50,
    count: 10
}

In the README you can find an example related to spf13/Cobra package. We need similar example but for another cli library :)