Photo: brucethelesser [deviantART]
Today, the question of which is the most awesome steampunk gear has been conclusively answered: Behold the Steampunk Hawkman flying helmet by deviantART user brucethelesser.
Here is a picture of the Hawkman's flying helmet, goggles and mask.
Costuming Tip: Look closely at the crest feathers. When any decent light falls on them they look like shards of glass. To achieve this affect back paint thin cheap plastic (microscope slides) with translucent paint and metallic pigments and stick them together. you now have your shards of bottle glass and the paint can't flake off since there sandwiched between two layers of plastic. Additionally there is no danger of shattered glass on the floor if the "feathers" get hit.
The mask is made of wonderflex, a themo-formable plastic.