Well, it’s been a week, and Nintendo hasn’t killed off the last Animal Crossing: New Horizons hack that allows you to duplicate certain items for free. In case it does, or if you’d like another method that allows you to duplicate every item you have—the Holy Grail of glitches—another has emerged. Here’s how to do it.
Source: LifeHacker – This Animal Crossing Hack Duplicates Even More Items