I love repurposed things but have only dabbled in a few creations.
The top picture is of my old charm bracelet that I hadn't worn since High School!( I am going to my 40th year class reunion this year!) I dug it out of the jewelry box and clipped a long chain to it . Voila a new vintage necklace!
The bottom two pics are of mostly ancient buttons that were my great Aunt Bertie's. They had been sitting in an old tin waiting for a brainstorm to make them useful. I decided to hook them on to a link bracelet by using jewelry jump rings creating a new vintage bracelet. This also can be a necklace by using the very same chain I use with my charms.