Centaur Thermos (Patreon)

I was thinking about ergonomics for centaurs... compared to the other races they have fairly stiff hands and arms, and humans are basically the only race with lips that can fully seal. Avians probably have even more exaggerated cup spouts than this, since they basically need to pour drinks down their throats... ferrets have a hummingbird like tube-tongue, so they slurp down drinks with their built in straw. Scuds drink by being in water and swallowing, cups are for losers.