If there's one thing which we can all say effects us, while at the same being not quite completely understood, it's time. We make it, lose it, waste it, save it, but no matter what we do we can only go in one direction; forwards (unless you're around the event horizon of a black hole, but that's an entirely different discussion). Clocks, with all their delicate working parts, are fascinating things but for measuring time the hourglass is a more evocative image.
With that in mind, here's a set of earrings to help you measure the passage of time. Okay they're solid so there's no actual sand inside, but..... who knows?