The current motion is linear, and trivial. A simple mathematical filter (e.g., I’ll feed it into a sin() function to make it more in a slightly different way) would still be trivial. Having something that starts to move in a more complex way (e.g., using cartoon-like animation, with a bit of anticipation and follow-through) (e.g., use Perlin Noise or some other techniques to create a more visual interesting motion) or leverages a bit more complex input (e.g., hold the button down and start moving on release, not click, and have the motion be dependent on the length of time held) (e.g., pull toward the moving mouse as it moves toward the click location, but still get to the target of the initial click) would be non-trivial. Something with state for example.

For example, masking the linear segments with Perlin Noise, or having the sphere otherwise have a non-linear movement guided by a collection of linear lines (really, by a few key points defining the motion) is perfectly reasonable.