I keep wanting to get back into it, but every time I start to, I get overwhelmed and annoyed by all the rules and regulations and updates to the eBay "user agreement" and all that. It went from a fun little hobby that paid for a weekend away once or twice a year to a lot of headaches.
Yet I'm currently writing up auction descriptions to get back into it, so I it looks like I'll return to eBay after all.
Next Door is a smart alternative. And I think, dealing locally, you get online buyers on better behavior!
I occasionally participate in focus groups, either in person or on zoom, that are paid. There are several companies that do these and their clients can be anything from drug companies to food manufacturers.
I used to do the occasional focus group. I did one for Dannon Water before they launched that. I thought it was a silly idea. Dannon's known for yogurt, not water — so it was thumbs down from me! Evidently they ignored my input because Dannon Water was soon in stores...and I guess it did well enough to exist for at least a decade. I don't think it's around anymore, though. Vindication!