scrap fabric or leather (True fact- If you donated an old 80's leather or suede miniskirt to a Seattle Goodwill, chances are I bought it).
Double sided fusible webbing
jewelry chain and class or leather cording
Pencil and ruler
First, admire your pile of thrift store leather and daydream about what to do with it.
Iron a square of double-sided fusible webbing to the back of the leather or fabric. Using a ruler and pencil, decide what size you want your rectangles to be (they need to be drawn twice as long as the final length so they can wrap around the chain or cord). Mine were roughly 3/8" wide x 4"-4.5" long.
Cut out your scraps. (For each of my necklaces, I made 7 strips).
Wrap the leather around the chain or cord, iron to adhere, and trim the edges. I trimmed the outer strips shorter, and kept the center one longer. There's a dozen ways you can trim them, or you can even trim the strips into tiny thin strips once they're adhered on the chain.
I have listed these in my etsy shop in case you don't want to make your own.