I just had an idea about what I could offer for ink, but I don't know if it's any good.
I thought about aoihitofying (making them blue or green haired and giving them superpowers) suporters' characters for certain amount of ink, but I don't know how it would work out in the end... I need to think how much ink for that would be fine, how polished would be the drawings and stuff.
Might just sit back and think of an extra short comic, some art or something else.