So, I had been racking my mind trying to figure out my something old, then I was helping a friend of mine and had to come up with a something old just hours before the wedding, so for her I used a favorite quote. I put in on a card, laminated it and used wedding ribbon to pin it to the layers of her dress.
For myself, I just finished mine, I used a bible verse on mine. I wrote it out in our wedding colors, put it on a thick cardstock I had at home, and will be pinning it to my dress.
Just wanted to pass along this idea, in case any of you are still trying to find your something old!