A Pencil Rocket is a potent explosive device that appears in Mother, and Mother 3. In Mother, it's a useable item by Lloyd.* In Mother 3, it is first obtained by Salsa and Fassad in a gift box in the later events of Chapter 3, and can later be purchased from some shops (including the Arms Dealer that Pigmasks own). Pencil Rockets appear as green pencils with blue wings. In battle, it is a single-use item that damages all enemies. Certain members of the Pigmask Army are weak to them.
*In Earthbound Zero the item name was Bottle Rocket. In Mother 2 Bottle Rocket was also called Pencil Rocket, Big Bottle Rocket called Pencil Rocket x5, and Multi Bottle Rocket called Pencil Rocket x20.