I noticed a woman standing in front of me on the bus wearing a nice chunky gold necklace. I noticed it was tied with a ribbon and upon closer inspection, realized she had used the ribbon because the clasp was broken. I thought it was so clever and simple, and also very pretty. My only note would be to keep updating the ribbon often so it doesn't look tired.
It's amazing where inspiration can come from; you just have to keep your eyes open.