On the subject of watches – all those dials. Sorry, chronometers. The sort men wear so they can pretend they're astronauts or racing drivers rather than menial salarydrones in the lower subdecks of the corporate motherships. Does anyone use them? Sorry dear, I'm off to save the universe with nothing other than a precision timing device and my finely honed wits. I'll be back for tea.
I've been calling the unnecessary bits of stuff frivels for some time now. Epaulettes are a frivel. Unnecessary buttons and zipperage are frivels.
Frivels are essentially decorative and of little practical use. There's also uniuses. These are items that seem useful but in practice aren't and as such get used the once. Those pasta makers, so beloved of middle-class kitchens, that get used once until the owner discovers that pasta is cheaper, easier, and tastier from the supermarket. Kitchens tend to clot with uniuses.