Recommended · for beginners
Make your own Crude Shaking Torch (Emergency Flashlight)
Why people recommend it
GreatScott's shake-powered torch project, referred to as a working example of moving-magnet induction and as inspiration for similar small generator builds.
Watch for: Motion-driven generation gives only limited power
In their words
I would have assumed that more Farads would be better, considering that it is a unit electrical capacitance, which would give the power bank more capacity, however in this video that partially inspired the project idea, the narrator opts to use a 1.5F supercap instead of a 22F one, which has added to my confusion.
Dylan F on electronics.stackexchange.com, Aug 2018. CC BY-SA.