My ex-girlfriend was a little bit of a crazy one, lets call her Sarah. Alice in Bondage was that she liked leaving big red marks on my skin. She loved the studded ones as they made deeper marks for display. There were times when i'd take off my shirt at the bondage parties we went to, and people would avert their eyes. Sarah was ever so proud.
Sarahs other delight was electro sex toys. They were a lot of fun, she particularly liked to turn the heat up.