Gimer stick/Legends

The gimer stick was a wooden cane used by Grand Master Yoda during the last decades of the Galactic Republic, and up until his death shortly before the Battle of Endor. The stick was made from the gimer bush, which grew on many worlds including Kashyyyk and Dagobah.

Yoda used his gimer stick as both a walking stick and a source of nutrients; gimer juice could be chewed out of the stick's bark, and was said to aid the Jedi Master in his meditation. This juice could keep Yoda alive for a while, were he to be without food. In his old age, Yoda also chewed on his gimer stick to release a natural anesthetic. Such canes were believed to symbolize the ancient wisdom of a Jedi Master.

At some point prior to the Battle of Kashyyyk, Yoda received a gimer staff as a gift from the Wookiees, although he left this stick behind on Kashyyyk following the execution of Order 66.

At some point during his exile on Dagobah, Yoda obtained a new gimer stick. He was in possession of this gimer stick at the time of his first encounter with Luke Skywalker, as well as at the time of his death.

Behind the scenes
In the computer game, Star Wars: Galactic Battlegrounds, Yoda fights with his gimer stick. At the time, Episode 2 of Star Wars was not released yet.

Non-canon appearances

 * LEGO Star Wars: The Video Game
 * LEGO Star Wars: The Complete Saga
 * LEGO Star Wars II: The Original Trilogy