Suitcase
The Suitcase is an item in Mario & Luigi: Superstar Saga. Before Mario goes on the Koopa Cruiser, Toadsworth rides on the Suitcase and gives it to him. Throughout the game, Mario and Luigi keep their Items, Badges, Clothes, Beanbean Map, and passports inside the Suitcase. The Suitcase also appears at the title screen, displaying whichever option is hovered over. The only places where the Suitcase is visible on screen, aside from when it was introduced, are when Fawful steals the Beanstar from Mario and Luigi, and when Luigi comes to heal Mario will Crabbie Grass.
Stuffwell replaces this suitcase in the sequel of Superstar Saga, Mario & Luigi: Partners in Time. In Mario & Luigi: Bowser's Inside Story, the suitcase concept is replaced by a simple menu, from which the player could access all the features of the suitcase.
