You can create a Jacob’s Ladder effect. The lightning bolt snaps back to a position along the start line after it has been pulled in a given direction.
A Stability value that is too low doesn’t allow the lightning to be stretched into an arc before it snaps back. A value that is too high lets the lightning bolt bounce around.
With the Reverb effect, you can make the audio of a clip ring out, that is make the last sound of the clip continue ringing past the end of the sound itself.