I have started this with my Slut,
so far we have used a normal pen, having her write the words owned Slut and My initials, I also have the problem of thinking up new ideas and words for her.
One thing I would love her to do is to write a list of things she would for for money, on her back like
20p - Blowjob
50p - Flash tits or Cunt
£1 - full body flash
and then take she to a night club and watch