A list of gyroids, and information on how to get them. Available after you download the 2.0 update of Animal Crossing: New Horizons.
How to Get Gyroids
From Gyroid Fragments
Go on Boat Tours and look for cracks in the ground. Dig them up with a shovel to get a gyroid fragment. Take the fragment back to your island and bury it, then water it with a watering can. The next day, dig it up to get a gyroid.
The day after it rains on your island, there is a chance of finding a buried gyroid instead of a fossil. Just dig up the cracks in the ground with a shovel.
How to Use Gyroids
Place a gyroid on the floor, a table, or a wall in your house, or put it on the ground or on a table outside, and the gyroid will make sounds and movements. If there is a music player near the gyroid, it will make sounds and movements along with the music. You can deactivate or reactivate gyroids by interacting with them.
Where to Place Gyroids
Gyroids can be placed on the floor, on surfaces, or on walls.