It’s for a project. Maybe there is some wasted source of energy out there that can be harvested.
Energy can be generated in different ways. It is not always necessary to rotate a generator to produce power. For instance, take solar energy.
I assume for your project, you want to generate electricity using a generator. The traditional methods for rotating a generator are wind and flowing water. You may use the generator to harvest power from the wheels of your bike/bicycle and use that power to light up the headlight of your bike, like a dynamo.
Let me think about it. As I get more ideas, I will update this topic.
Thank you! Yes it’s for our project and the source of energy has to be a result of human activity.