I don't know why you are asking me what you should sell. If it was easy to come up with a service/product to sell, everyone would do it. That's the challenging part of running your own thing.
I love Creative writing, journalism, etc. In fact, I've paid quite a bit of money via Patreon and Kickstarters for creative pursuits. The creators didn't sell anything to me. I'm not sure what you mean by this.
And if your only method for asking your users for donation money is buttons/links, then you should change it up. Plug it in your media, in your speeches, etc.
i'm asking what gets you to make the leap to support creatives - everyone "Says" they do it - but the reality is very few actually do. curious what triggers people to support something.
i'm not asking you what products or services i should offer, i'm asking what makes people embrace something enough to actually support it.
I can't point to any specific trigger, but I notice that I get drawn to certain creators. If I start to recognize their name/brand, and I look at their past work, I get a sense of "I want to support that".
A good example is Complexly: https://complexly.com (sorry that their website is awful)
I started getting videos sent to me by friends, and recommendations on youtube. After watching a few, I looked through their catalog, and relatively quickly and easily saw what they were creating, and I thought "I want more of that in the world".
They had a Patreon link readily available, and mentioned in the videos that Patreon was one of the ways that they funded themselves.
I know that's not a great answer, but everyone's trigger will be different.
I think for me it boils down to a few variables:
Do you have a good product that I would pay for, but aren't forced to? Am I excited for your next product, even if it ends up vastly different from your other products?
Do you consistently put out good material? (and by this I include: is your product full of ads/tracking?)
Is your income transparent?
Do you encourage people to share your work, even if you aren't going to directly make money off of every fan? Do I get the impression that you'd rather me share it with 1000 people who won't pay, or 5 people who will pay?
Do you make it easy for me to pay you, in whatever form is convenient to me?
Nobody ever fits all of this criteria perfectly (I can criticize Complexly all day long), but they have a solid product that they give to everyone, and have relatively low friction for taking my money.
How about either:
A) A traditional product or service, where you can skim some money off the top.
B) User donations: Patreon, Kickstarter, etc
I'm open to more ideas, but these are already in the wild, and are already working just fine.