One more suggestion. You might add at least a partial version of the outer case, so that people understand what the magnets on the motor are reacting with.
And, if you want a simple example of something that creates torque, you could add a little propeller to the end of the shaft with variable pitch blades. Increasing the blade angle would increase torque and making the blades almost flat would decrease torque.
You could easily make several variations, such as an AC motor and if you want to flip that around, you could turn the motor into a generator with wind causing the propeller to rotate.
Live Demo: 
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