Well I have the reward Tier set up:
For every 666 amount of ink I reach (666 cause my book is title Birth of a Sin and the MC is pretty much Wrath/Satan in human female form), I will do a unrelated to the story (except for the characters, even ones people have not met yet), but Bonus Chapter complete with Insert Art.
Whatever the theme is will be a randomly generated list of prompts (including flashbacks, AUs and random questions from Readers) and I'll have a preview of the list too on the InksGiving chapter. Then everytime I reach a multiple of 666, I'll post the 'List God' demands and do that XD. Something a little fun! I hope. We'll see.
I'll draft it out and then once I have it set, will advertise it on the forums :3