Halloween Hat is a type of currency used to buy special prizes from the catalogue. It's part of the Halloween event.
It is unlocked at experience level 17.
Getting hallowen hat
Each boat during the event requires one type of treats from the halloween treats maker. Filling any box with a treat gives you a certain amount of halloween hats.
Using hallowen hat
Main article: Catalogue
Halloween Hat can be used to purchase items from the "Fyne & Mysterious Gifts Catalogue," found by clicking the blue post box at the end of the driveway. Different gifts have different prices.