You can always make it a project filed under Other / Miscellaneous, and set the file type to documentation. That way people can give you something in return, and have a place to discuss it. Hope this helps!
So you're saying I could treat it like a downloadable product rather than a post?
Does Itch let you provide Downloads without any payment barrier? Or is "Name Your Price" the lowest option you can pick?
You can disable payments entirely if you like.
