This example of a khakkhara is from Central or East Java. Above the handle is a lotus leaf from which spring eight fantastical rhinoceros. In the mouths of each is a small metal ball which jingles when the staff is shaken. They support another flat shaped bell, again with a ball inside. Above this are four Buddhas sitting in meditation around a four-sided stupa
The khakkhara is a staff that mendicant monks carried. They had bells or cymbals which would make a sound when the monk struck the ground in order to make sentient beings (especially insects like ants) aware of the monk's approach.
You can read more in my musings https://baliqueartsofindonesia.com/blogs/blog/khakkhara