Button
Sometimes, especially during travel, keeping both of your earrings together is more difficult than it sounds. If you take a button big enough to hold the area of both of your earrings, you can attach the earrings to the button! Now you won’t have to worry about losing one earring from the pair, but you will need to keep track of the button.
Eyeglass Case
Usually, when you get a brand new pair of glasses, the company or store will also give you a new case to go with the new specs. What do you do with your old case now, though? Instead of throwing it away, you can use it for storage! Put your chapstick, travel perfume, or anything you usually find yourself losing in your purse, inside of the case.