The Fish Tank appears after completing one bundle. These bundles are completed by collecting fish. This requires catching fish with a Rod or Crab Pot. Different fish can be caught in lakes, rivers, and oceans, as well as different times of day and year.
Note: It may not be possible to finish the Specialty Fish Bundle before finishing the entire Vault section, as you need access to the Desert to get a Sandfish, unless it becomes available at the Traveling Cart.
Completing the Fish Tank bundles removes the Glittering Boulder next to the mine entrance. Willy will give the player a Copper Pan which can be used to collect ore from lakes and rivers.
The Bulletin Board appears after completing three bundles.
Completing the Bulletin Board bundles improves the player's friendship rating with every non marriage candidate villager by two hearts. The morning after, Mayor Lewis will send you a mail saying that all the villagers have been getting items they have wanted for years that they posted on the bulletin board in the community center. He proclaims his gratitude of all your hard work.
The Vault becomes available after completing four bundles. Each bundle in the vault simply requires gold to complete, and the item slots are replaced with a large purchase button. Pressing 'purchase' will complete the bundle and deduct the gold from the player's total, provided they have enough.
Completing the Vault bundles, costing a total of data-sort-value="42500">42,500金, repairs the Bus on the road between your farm and Pelican Town. Taking the Bus grants access to the Calico Desert.