I like spanking. It's on of my favorite things. I also like pain, so my poor Master has to come up with some clever ideas to punish me. However, if you just want to play with punishment, and not really punish her, since she's done nothing wrong... make the punishment fun! 'Catch' her doing something wrong, like masturbating without permission, or wearing an outfit that you find totally inappropriate. Then punish her for that discretion. But, make it something fun for both of you. You could spank her, or make her cum multiple times, or do the dishes while wearing nothing but undies and a dildo. Some 'punishments' can be a lot of fun if used for that sole purpose.

No matter what my Master does to me, as long as I know it's in good fun for Him and me, I enjoy myself. The feeling from His actions are totally different when I know I'm in trouble.