Mascot head

The mascot head is a piece of headwear appearing in Fallout 4.

Characteristics
The mascot head is a unique hat that can be worn with face apparel. It has a hole in one side, allowing you to still see your character's face.

Location
Found east of Diamond City, in D.B. Technical High School. Said location is also west of Hesters Consumer Robotics and itself south of Medical Center metro. Go down to the basement of the school and find Bosco, who is wearing the head.