things described as steampunk...that aren't

[Deimos]

I can see the first one being called "steampunk".  Generically (from a steampunk perspective) it's a brass thing-y doodad which could be used in constructing a valid steampunk contraption.
I've advertised brass and copper stock (sheet, tubes, rods etc) as "steampunk" and also some brass jewellery findings.
I've used all of the above in my steampunk builds and think it is a good way to sell such stuff  to other folks who build steampunk devices and costumes.