Not to be confused with Scarecrow Hat from vanilla Terraria.
The Scarecrow's Hat is an equipable item that can be placed in the Helmet slot. It drops from Happy Scarecrows and Angry Scarecrows with a 1 in 500 chance. When worn, the Angry Scarecrow, and all enemies in the Halloween event and in the Pumpkin Moon event will ignore you. However, they will still deal damage if the player walks into them. The hat lowers the player's defense to 0 and nothing will increase this, so be cautious.