Sfw fanart in merch, what would you like to see? (Patreon)

So I'm currently doing the final stuff I'm selling for confuror. The very last thing I'm doing is a sketchbook (if I got time and money to produce it that is)
The question is would you rather see my oc's in a sketchbook or would you like fanart? If you'd like to see fanart, which character would you like to see?