Storage Key

In Paper Mario: The Thousand-Year Door, there are two Storage Keys. Both are found in Glitzville. The first one is found in the phone booth after Mario gets an email from X. That key opens the door to the Storage Room. The second key is found behind one of the posters on the top level of the Giltz Pit after Mario gets another email from X. That key opens the door on the second floor of the Storage Room.