re - Online surveys - keep in mind no-one says you have to be honest in your feedback.
I do one a week (so it’ll take ages to earn my £50 - but never mind.) If I put my mind to it I could do at least 10 per day.
I’ve learnt to make most of my answers utter rubbish.
How much TV do I watch a day? If I put the honest answer it then goes on to ask for loads more opinions so I just say 5 minutes of BBC 1pm news.
Work? Most of my replies are make-believe.
Do I claim benefits? - Prefer not to answer.
Who do I bank with? - as above
and so on. They say it’s totally confidential and you cannot be identified - if that’s true so be it. If not - well no-one has contacted my yet.
What I’m saying is don’t rule it out - if you have the time and patience.
Other than that how about proof-reading? Publishing houses may offer roles, but do try the universities and local colleges too, students pay you to check the spelling and grammar (not the content) of their thesis(s) and even overseas students taking English can send you their work electronically for proof-reading.
Worth a try.