If there is something like that, will you do it? How many hours per day can you do it? How long? 3 months? 1 year?
IF you can do it 10 hours a day without getting bored and you think you are doing something great, then I can say you don't have a life.
With all due respect to workers like the ones you mentioned (factory work, even security): I have incredible amounts of respect for them. I tried that work before and didn't have the constitution for it, but without them...
Re work like captcha solving... You have severely underestimated the human capacity to do mindless, repetitive tasks. People mentioned Raiblocks above, I myself was guilty of manually mining XRB a year ago, when I didn't know better. I must have spent >20 hours? Enough to get over 100 XRB at any rate. I discarded them, sad story.
Faucet users years ago easily got more than 1 BTC after similar hours of work.
Even after the crash, that XRB's worth over $1800 today. This kind of impossible feat by Bitcoin and others make people willing to do that work.
Take into account economic factors (min wage in countries in my region start at $100 - which is 0.009 BTC now) and you begin to understand why there are still people ready and eager to do these... chores.