Balls with gradient and a tunnel. Looks like fireworks, at least for me.

Knob 1 : Size of balls
Knob 2 : Speed of tunnel
Knob 3 : Direction of the tunnel
Knob 4 : Colours of balls
Knob 5 : Background

Audio in make kaoss.

Works well with or without audio signal.
Press The Persist Toggle button for more pleasure and “firework” effect.