Stress positions are under-rated. They are excellent prep for a punishment discipline. This is especially true if she has to hold the implement of her chastisement. Imagine her thoughts, "This cane in my mouth will soon be laying down painful stripe
When your cunt is serving you and your friends, it is a nice touch to attach a clit clamp with a bell so you know where she is at all times...this allows her to be found quickly if your guests need to use her....