how doctors make extra money besides more clinic hours?

PGY-3 here trying to get my finances in order before attending life hits. just looking at ways to supplement income. call it lifestyle creep or just inflation, but my paycheck isn't stretching the way it used to.

Ran into this whole world of paid surveys for doctors. some of the numbers seemed too good to be true so i figured i'd ask here first. Is it legit or is it $5 for an hour of clicking?