Found this pretty neat Washer&Ribbon DIY Necklace on Nestled and just had to share!  All you need are 20 to 30 1 inch metal washers (depending on the length you want), and about 1 yard of 5/8″ wide grosgrain ribbon.
How To Do The Do?
Step 1: Thread your ribbon up through washer #1, leaving enough ribbon on the end to tie the necklace when it’s finished.
Step 2: Thread the ribbon down through the top of washer #2.
Step 3: Thread the ribbon back down through washer #1.
Step 4: Pull the ribbon tight, so washer #2 is laying flat on top of washer #1.
Step 5: Thread the ribbon back up through washer #2.
Step 6: Repeat steps 2 through 5 for each additional washer. Once you’ve threaded all your washers onto the ribbon, tie the two ends of the ribbon together and trim off the excess.
Annnnnnnnnnnnnnnnnnnd… You’re done! 

Have fun!!