Low entry barrier hobby that can potentially generate income?

Perhaps visiting elder-care facilities and have them hand you pictures from their youth then using AI to make videos of a younger version of them participating in events from that time period and including videos of their departed loved ones back then and aged to be with them today. It should be cost adjusted for elderly to afford and they should get at least one free short video demo. Use this hobby to perfect ones skills.

Once one is good at this assist intelligence agencies and politicians with making ultra-realistic propaganda and blackmail videos to make the public question the validity of every video they see.

Authoring your own web novel on webnovel.com or other such websites

Self-publishing books. Low barrier to entry, high barrier to sustainable profitability.

The second you start trying to monetize your hobby, it stops being a hobby.

You’re looking for a 2nd job or a side hustle. Just call it what it is.

It sounds like you have your mind set on videos (which to me is a grind rather than a hobby).

Personally, I would: make video games, 3d models, generative art, board games, short animated films, that kind of stuff.

You'll probably never make money from any of this, but you said "potentially"...