I recently got a new 6+ and I'm very happy with it. My old 4S 16Gb is now sitting unused on a dresser at home and I'm wondering what I should do with it. The 4S is in excellent condition with no scratches on the screen or sides and only a few minor scratches on the back. It is an unlocked Verizon version. Should I: 1. Keep the 4S as a backup and use it like a quasi iPod Touch? 2. Sell it on Ebay or Craigslist? 3. Somehow get something for it from Verizon? 4. Donate it to a worthy organization? Please note that I'm not asking this as a solicitation here on MR, so no purchase offers please.