Bottomless Coin Sack

The Bottomless Coin Sack is a magical item in Wario Land: Shake It! that whenever shaken will spit out coins making it a very desirable treasure for pirates (or any other greedy person). The Bottomless Coin Sack resides in Yuretopia (a dimension within an ancient globe) and is basically the center of Yuretopian life. The Bottomless Coin Sack is stolen by the pirate known as the Shake King. Captain Syrup, the female pirate, wants to possess this item for herself. However, she doesn't want to do any of the dirty work herself, so she "hires" Wario.

Trivia

 * Coincidentally, there was a similar item in Super Mario RPG: Legend of the Seven Stars, which was a golden treasure chest created by a Magikoopa (possibily Kamek), and it contained an infinite amount of coins.