This client was looking for V2.0 of their deer character. Those are real antlers (provided by the client) and are removable yet held firmly in place with t-nuts and bolts. This person shakes their head vigorously, and everything remains stable and is still comfortable to wear.
The head is built on a heavily modified foam base and sized for wearing glasses. The eyes are follow me full buckram. The muzzle is lined and ready to accept a removable fan.