Setting up content for it has been pretty conflicting to me as I don't want finished work to be behind a paywall. So, I'll be doing a little test.
I decided to try doing a little a coloring page set. It'll be flower based and the current price estimate will $5 for 5 pages that have a white and transparent version. The lineart also don't have anti-aliasing so I can ensure it'll be as accessible as possible. It's not really something I'd consider posting normally, making it more of a bonus.
Another one being considered is offering development art since that's also something not usually considered for posting. It won't be much as a lot of it is sketchy.