As I wondered people walk daily approx 2km .
And each step is a form of force applied to ground
I got an idea by lighting up the gas stove by a lighter.
Just by pressing with a thumb it generates energy.
I have questions like can we store this energy?
So by applying force by a footstep some amount of lighter it can generate good amount of energy.
These lighter works on piezoelectric material which get hammered and these material release energy( please correct me if iam worng)