human powered

recently, i have the desire to have a stationary bike that generates power to... (fill in the blank)

a tv
a computer
a rechargeable battery.

where would i start looking?

not sure if a non-mechanical person like myself can put one together or if it would just save the entire power grid if i just bought one lol

does anyone here have such a thing?
where is a good place to buy one?
where are good instructions to make one?

Re: human powered

https://www.thegreenmicrogym.com/the-story-of-the-upcycle-eco-charger/

https://www.amazon.com/K-Tor-power-IMPROVED-pedal-generator/dp/B07VF9J6JV/ref=sr_1_3?dchild=1&keywords=Exercise+Bike+Generator&qid=1604946067&sr=8-3

https://pedalpowergenerator.com/shop-pedal-power/exercise-bike-generator/


I have no hands-on knowledge or experience with any of these. I just posted them so that you know that your idea does exist, and it is possible.

Re: human powered