3. Stuck zipper

A zipper can get stuck for a number of reasons, but one trick that works in almost all cases is to put a little Vaseline or lip balm between the zipper teeth.

This should be enough to unblock a stuck hinge.
4. Teeth that have fallen out

You need glue, a cotton swab, and scissors. Cut the plastic tube of the cotton swab into very small pieces.

Take a fragment, open a cut on one end and place it on the part where the tooth is missing.