Acorns are items that appear in Animal Crossing: Wild World and Animal Crossing: New Horizons. They are placed under trees throughout the town by Cornimer during the Acorn Festival and can be gathered and traded for exclusive items in the Mushroom Series. They can be found anywhere in the player's town, though mostly under trees. They cannot be shaken from trees.
After the Acorn Festival, acorns have little use beyond being sold to Tom Nook. They cannot be planted to grow trees or kept for long periods of time, because they will turn into rotten acorns, which may attract ants.
If the player does not trade the acorns with Cornimer for furniture, they can be sold at Tom Nook's store for the following prices:
- Acorn: 80 Bells each
- Large Acorn: 200 Bells each
- Rotten Acorn: 2 Bells each
- Round Acorn: 100 Bells each
- Small Acorn: 50 Bells each
Once an acorn is sold to Tom Nook, it cannot be bought back or reordered.