Activities: Buried Items
There are pirate flag-marked piles of sand, grass and dirt scattered around the Park in various areas. If you have obtained the Pirate Shovel from the job Some Piratey Crafting, you can go to these piles and dig up items!
All you have to do is find the pirate flag-marked piles located in the different Park areas, get close to them and hover over them with your mouse until it changes to a Shovel and click.
Here is a list of the buried items that can be dug up and their locations: