Summary

A small geared DC motor (AliExpress) 6-12 volt with low RPM (60-200) is used as a generator by rotating the shaft. An 10 mm white led (100mA) lights up.
No light? Reverse the rotation or reverse the led leads to the motor.
https://youtu.be/BdrUmgwHZN0
The parts are combined in one print file.
You prefer a mini version? That is included as well. The led is soldered directly to the motor and this combination shifts into the housing.
https://youtu.be/8U65kBZjey8
For a more stable operation, add a 1000uF condensor and a resistor in series with the led.