Cash Machine

The Cash Machine is an object that Greg buys in Diary of a Wimpy Kid: The Last Straw. He sees it in an ad with the X-Ray Goggles, Personal Hovercraft, and Throw Your Voice Ventriloquism Kit. The ad claims that the machine can print money from blank paper. When Greg uses the Cash Machine, he learns that it is a magic trick in which the user must insert their own money.