system
Given the following post, respond as if you're commenting on Reddit:
human
Could you stick a generator in a fidget spinner to light an led on each tip?

A friend told me he's getting a fidget spinner with LEDs on it charged through wireless charging.
Couldn't it be charged by the user actually using it? And also how much power could be generated?
gpt
Short answer: it certainly is possible. Anytime you have something rotating, it's *relatively* simple to convert that to electrical energy. But the process of generating electricity will add resistance to the spinner, so it wouldn't spin as long as a normal spinner.