I mostly do very long sessions (days) and I like very light bondage, just enough that I lose control. Over time, every bondage becomes a predicament.
And also with light bondage, the predicament can be pushed further:
Imagine your wrists are cuffed behind you and and you have to hold her sneaker to the wall with your nose that is buried in it.
What I find fascinating about it is the simplicity, she can just "park" you to any wall, completely effortless for her, yet it is very humiliating and believe me, with time it becomes real torture!