Name                         Effect
Arcane Hat                 Random chance to delay time.
Archer's Cap              Shots from slingshot deal more damage the further they travel.
Beanie                        Monsters have a greater chance of dropping loot.
Blobfish Mask           Triple the chance to find treasure while fishing at night.
Blue Cowboy Hat      While riding the horse and for 30 seconds after dismounting gain the Buckeroo Buff: +2 Speed
Butterfly Bow             Spawns Butterflies around you while outside. People in the same outdoor area as you will gain 5 friendship every 7 seconds.
Cat Ears                       When you are hit meow and gain Skittish Kitty Buff: +3 Speed +2 Attack
Chef Hat                      Double the buff from eating food.
Cool Cap                      When outside in spring get the Season Protection Buff: +2 Foraging +1 Farming +1 Fishing
Cowboy Hat                 While riding the horse gain the Buckeroo Buff: +2 Speed
Cowgal Hat                  While riding the horse gain the Buckeroo Buff: +2 Speed
Delicate Bow                Sparkles inside! People in the same inside area as you will gain 5 friendship every 7 seconds.
Earmuffs                      When outside in winter get the Season Protection Buff: +2 Foraging +1 Farming +1 Fishing
Fedora                          When in the Mines or Skull Cavern gain the "Fortune and glory kid." Buff: +2 Luck
Fishing Hat                   While outside and not on the beach get the Shaded Buff: +2 Fishing
Golden Mask                Damage enemies near you every 3 seconds the damage can kill mummies.
Good Ol' Cap                When outside in spring fall or summer get The Forager Buff: +2 Foraging
Hunter's Cap                When outside in fall get the Season Protection Buff: +2 Foraging +1 Farming +1 Fishing
Knight's Helmet           Gain +4 armour and +2 resistance.
Lucky Bow                    Gain Lucky charm Buff: +1 Luck
Mouse Ears                  When you are hit gain Skittish Mouse Buff: +4 Speed
Official Cap                   While on the Beach gain the Ol' Mariner Buff: +2 Fishing
Party Hat                       Gifts given on a birthdays give even more friendship.
Pirate Hat                      Double the chance to find treasure while fishing
Pumpkin Mask              Spawn a horse and mount it. The horse will disappear when you unmount it.
Red Cowboy Hat           While riding the horse and for 30 seconds after dismounting gain the Buckeroo Buff: +2 Speed
Sailor's Cap                   When tipsy gain the Drunken Sailor Buff: +10 Attack
Skeleton Mask              Shoot out bones when you get hit that deal 40 damage on impact.
Sou'wester                    While outside in the rain gain the Fishing in the Rain Buff: +4 Fishing
Squire's Helmet            Gain +2 armour and +2 attack
Straw Hat                      When it's dawn and sunny gain Dawn Farming Buff: +3 Farming
Tiara                              When sleeping increase the chance for the fairy farm event.
Totem Mask                 Chance not to consume totem on use.
Trucker Hat                   When outside in summer get the Season Protection Buff: +2 Foraging +1 Farming +1 Fishing
Wearable Dwarf Helm  You can Understand Dwarves. When entering a new level of a mine gain Mad Dwarf King buff: +4 Mining +2 Speed +1 Attack.
Witch Hat                      When sleeping increase chance for the witch farm event.
Blue Bonnet                  No effect.
Bowler Hat                    No effect.
Bridal Veil                      No effect.
Chicken Mask               No effect.
Cone Hat                       No effect.
Copper Pan                   No effect.
Cowpoke Hat                No effect.
Daisy                              No effect.
Dinosaur Hat                 No effect.
Elegant Turban             No effect.
Emily's Magic Hat        No effect.
Eye Patch                      No effect.
Fashion Hat                  No effect.
Flat Topped Hat           No effect.
Floppy Beanie              No effect.
Garbage Hat                No effect.
Gnome's Cap               No effect.
Goblin Mask                No effect.
Green Turban              No effect.
Hair Bone                     No effect.
Hard Hat                      No effect.
Living Hat                    No effect.
Logo Cap                     No effect.
Magic Cowboy Hat     No effect.
Magic Turba               No effect.
Mushroom Cap          No effect.
Panda                          No effect.
Plum Chapeau            No effect.
Polka Bow                   No effect.
Propeller Hat              No effect.
Santa Hat                   No effect.
Sombrero                   No effect.
Spotted Headscarf    No effect.
Top Hat                      No effect.
Tropiclip                     No effect.
Watermelon Band     No effect.
White Turban             No effect.