You can get metal flask's that fit into a bottle rack so not near computer from most supermarkets and outdoor shops fairly cheaply if they hold enough coffee for you. And if you drop them they dent instead of breaking so are still usable.
Not had one for years, but my experience always seemed to be that the silvered glass bottle inside was the bit that got smashed up from being jolted around. The outside casing would remain relatively intact no matter what it was made from. Have things changed?