It depends on whether you want to send DC power or AC power. Find a matching low-speed permanent magnet motor, install the fan blades and place it in the wind. Then the original motor wires will generate voltage, the voltage size is related to the speed, and the AC and DC current is related to the motor type. This method can generate 100% electricity, but the generated voltage is unstable and requires a voltage stabilizing device. Energy production depends on engine power and speed. Generally speaking, the electricity generated by the DC generator can directly power the LED lights. When the wind changes at night, the lights will flash, which is very beautiful.
It shouldn't be difficult to create a power generation device for this thing. I think the difficulty lies in the storage of electrical energy.
You must firstown a wind turbine to receive wind energy. Then make a device like a bicycle chain drive to transmit the wind force received by the windmill to the generator, and then install the generator. In this way, a small and simple generator is ready. The most important thing is how the electricity is stored. I hadn't thought of that, you can check it online.