You can also do a bunny hop on a unicycle. In fact, it is probably easier to do on a unicycle then on a bicycle.

To do a bunny hop on a unicycle, simply grab hold of the seat with one hand, time things so that the pedals are in a horizontal position when you jump, then leap upwards while pressing down on the pedals with your feet

Bunny hopping can be a very useful (and fun) thing to do, whether you are doing some mountain unicycling or just riding around town.