Freelance or low stake jobs for someone who wants to fill time?

I work full time and make just enough to not sweat too much when I buy something non-essential, which is a nice change of pace as that wasn't the case last year. Still, since the Pandemic I'm not used to having only one source of income (I usually have 2-3 jobs) and would like more money to put away.

I used to work in food service and could go back as an on-call worker if I wanted, but I'd only get called last minute on weekends, so that might get messy. I used to teach online, but getting up at 4/5am five days a week for 8-$12 was taking a toll on my health.

I know there are apps put there and things, but I wanted to see if there's anything else out there too.