Memories, fine motor function, hearing, ability to process pain, lowered inhibition, strength...

...For individuals who possess certain powers, they can be taken away...

There are numerous examples, but I believe that will suffice. Some can get rather cruel, but the Malnosso and their segregated faction have a tendency of being rather... sadistic.
Kidnappings are a rather common occurrence... those too usually end in a 'penalty' as well... though those have a tendency to be rather more humiliating.