Pot cannon

Pot Cannons are objects seen in Super Mario RPG: Legend of the Seven Stars. They are notable for being the first-ever helpful cannon seen in a Mario game. (Harmful, Cannonball-shooting cannons previously appeared in Super Mario Bros. 3.)

As their name suggests, Pot Cannons are pot-like cannons. Interestingly, they also have eyes that seem to serve only decorative purposes. Their ends can also be thought of as mouths (as Pot Cannons seem to have a deliberately humanoid look).

Mario can enter a Pot Cannon just as he would a Warp Pipe (by jumping onto it and pressing "Down"). After Mario is loaded in the Cannon, it will start moving in three directions (forward, backward, and upward), clicking as it moves. By jumping while inside the Pot Cannon, Mario can launch himself forward (and, if he times his jump perfectly with the click, he can blast himself super-far).

Pot Cannons are primarily used in Land's End, where even Geckits have the ability to make use of them.