I've got a bunch of rubber hoods (I use them shooting video with DSLRs, to seal the lens against the matte box)...
But I kind of dislike them on film bodies... more of an aesthetic thing. They're totally functional and very affordable of course, I just like black metal on an old camera.
If you want metal, between Amazon, Adorama, and eBay, there's all kinds of metal hoods. Just search by filter thread and study the specs and dimensions. They're all very cheap these days.