I use different kinds of clamps, which I can hang onto nipples and genitals.
The pain that clamps cause is like a stingy feeling and also quite hard and intense, so most people do not enjoy it, at least not for very long. Those who are into heavier pain may enjoy clamps with weights on them.
I can also pinch you with my fingers and so cause different kinds of feelings depending on how hard, where and how I pinch.
See also: Pain