Depends what you mean by “non-commercial” and “stuff”. Does community-supported via Patreon count? Are you after music, video, fiction writing, non-fiction, comics…
Stuff as in anything, intentionally broad there.
Non-commercial is harder to nail down, but by and large I mean not-for-profit, sort of casual hobbyist activity with zero interest in trying to turn it into a business/side-hustle. People discussing/sharing their original stuff simply for its own sake.
Not fan work, coverage of commercial works, etc. Nothing against that stuff, it’s just easily found and readily available.
I mean there is peertube for video content. I know my instance runs aNONradio which is pretty eclectic music and talk radio, but there are probably other similar streams. There’s quite a few services for CC licensed music. Personally I listen to a lot of actual play RPG podcasts, which are probably right on the border of hobbyist / side hustle stuff. More indie and low budget than say, critical role or the like, but still partially monetised, even if only to cover costs.
