In Brave New World, you could tell how Aldous Huxley uses zippers to symbolize how the dystopian World State is centered on hyper-efficiency and productivity. The zippers are something like a fashion statement. They symbolize how preoccupied the people are with rationality and organization.

Think about the scene in which Lenina enters the changing room. There are lots of zips. There’s “Zip!” and “Zip, zip!” and “Zip.” The word is fast, snappy, and compact. It’s neither messy nor complicated. In a way, it’s a lot like the World State. Everything is ordered and simple. All you have to do is obey the labels and you’ll be fine. Simply “zip” yourself up and you’ll avoid trouble.

You could also analyze how the zipper reflects the ease, comfort, and pleasures of the futuristic universe. You connect the accessibility of zippers to the prevalence of sex.

Additionally, you could analyze how zippers betray the odious undercurrents of the world. While zippers allow you to quickly get out of things, they also allow you to quickly stuff things away—things you might not want others to know about. You might want to think about how the Director tries to “zip” up his wife and son in the Reservation.

As for the T symbol, you could connect it to Henry Ford. He’s basically the god of the World State. Henry Ford founded the Ford Motor Company. The Ford Model T was the first mass-produced car. Perhaps the T symbolizes how the World State mass-produces humans.