6 model

Free

Custom Ruler for GREATHELM by Malev Da Shinobi

MyMiniFactory

Free

Greathelm Quickstart Pawn-like Miniatures

Cults3D

Free

Tournament Knight

MyMiniFactory

Free

Great Helm Makeup Organizer — knight's helm, no supports

Printables

Free

Medieval Great Helm (Standard Ver Full Size Ver)

Thingiverse

Free

Medieval Great Helm Pen Stand (Standard Ver 1-3 Size Ver)

Thingiverse