Gather enough people in a room, and some precocious trickster will start to get up to mischief. In real life, I'm usually that person; I love a good prank. And that's why I truly appreciate what one Reddit user has concocted.
Over on the Animal Crossing subreddit, New Horizons player u/buttfartsauce (love it) shared their despicable invention: a simple design pattern shaped like a dig spot. Buttfartsauce's plan was to put them all around their girlfriend's island.
Animal Crossing: New Horizons players should already understand why this is so good, but for those who haven't caught on: dig spots are special areas that spawn daily, containing fossils. (The glowing ones are different, but you can't really mimic that with a design pattern.) Fossils are a precious resource, useful for either selling for big sums of Bells or donating to Blathers for the island's museum.
Now, Buttfartsauce's significant other will never truly know whether a dig spot is true or a ruse. But they have no choice; they must dig, or risk losing out on fossils. It's brilliant, and bold, considering they're doing this in a time where they're (presumably) holed up in the same location. The prankster even refined and shared a QR code for a new, improved fake-out spot.
It's important to note, you can really only do this on an island you share with someone else. After testing it out, we weren't able to put design patterns on each other's islands. That being said, as mentioned in the comments, we do have an alternative: twigs.
While you can't put designs on the ground on other people's islands, you can best-friend them and then bury things. Depending on the item you bury, it may cosmetically appear to be a dig spot, but actually contain a twig, or a rock, or some other comical item. Let your imagination guide you.
Animal Crossing: New Horizons players have been inventing all kinds of ways to enjoy multiplayer island life, from in-game weddings and parties to musical chairs. For all the pranksters out there, please enjoy this new trick with my blessing, and use it to truly spice up your island vacations.