I really think a locket as a gift is something extra special, I'm not sure why there is just something so personal about it, so sweet.
Above is a locket i own this was a Christmas gift from Kirk, i also own 2 others (sorry no pictures) one that was given to me when i left my first job by my colleagues it is so precious as it is engraved with the place i worked including our store number.
The other is a 101 Dalmatian locket, silver with blue stones and a Dalmatian on the front, inside it holds a picture of my brother when he was younger, i put it in there many years ago so it means alot.
I found some others i like below. I literally could have put 3000 pictures there as i trawled through etsy, but i settled for just a few!