Fix Your Glasses
If your glasses break, you can thread the floss through the hole where the screw was in order to reattach a broken stem. You can also use floss to tie the nose piece back together.
To make sure you don’t lose them, you can also take a long piece of floss and tie the ends around both stems. Place the long middle part around your neck, and your glasses will hang at your chest where they won’t get lost.