Helmet Greeblie - AT-ACT, Jyn Erso, Enfys Nest
The Greeblie seen on the back of the AT-ACT Driver helmet, apparently also used on Jyn Erso's hat (flashlight accessory) and Enfys Nest's belt. I modeled it in Fusion360 using references from those costumes, as well as the Helmet replica produced by Anovos.
It's been scaled to fit the Sean Fields Shoretrooper helmet (http://www.shoretrooper.co.uk/)
It's in 3 separate parts, the main body, canister and knob, for ease of printing (less supports needed)