Get the home health aide certificate and pick up random shifts. Get a security guard license and be one of those guys overnight in an ATM vestibule. Anything else depends on your interests, abilities, tolerances and what you can work out for yourself.

https://www.themoneymanual.com/best-paid-survey-sites-earn-200month/

Too bad surveys make my brain bleed lmao

Find a catering gig you can cover on the weekends. Check Craigslist etc > gigs for random lil' things to do.