What is the range of angles that the servo motor can be spun to? What if you want it to go further? What if you want it to spin around endlessly?
How do you get the servo to spin more slowly to a particular position? How do you get the servo to spin more quickly?
Create a circuit with a potentiometer and a servo motor. Write a script for the circuit so that turning the potentiometer will turn the servo motor. Turning the full extent of the potentiometer should turn the full extent of the servo.