Pogo stick

Spring-aided device for jumping off the ground in a standing position

A pogo stick is a device for jumping off the ground in a standing position—through the aid of a spring, or new high performance technologies—often used as a toy, exercise equipment or extreme sports instrument. It led to an extreme sport named extreme pogo or "Xpogo". It consists of a pole with a handle at the top and footrests near the bottom, and a spring located somewhere along the pole.

From Wikipedia, under CC BY-SA. More on occurri.