You can't wear your earrings as a pair if you keep losing one of them. With a few standard clothing buttons, however, you can keep all of your earrings together.
Tossing earrings down on your counter, nightstand or into a jewellery box is a recipe for disaster. They can get knocked off accidentally and hidden under the bed forever. Or they can hide in plain sight, surrounded by so many other earrings you would have to go through them all to complete the pair. Instead, Instructables user littleCUPCAKEZ suggests you always keep them together using pant and jacket buttons. This makes it easier to organise them, and makes it a lot easier to travel with them. Of course, you could still lose the button, but that's always a risk with small jewellery.
How to Keep Your Earrings Together When Travelling [Instructables]