We have a Sophie too, and she has never liked a particular toy. She is 7 y/o and has a basket stuffed full of toys. She has never ruined a toy and still has toys she got on the night we brought her home. The one thing she really liked the most was something that was not a dog toy. It was purchased for a baby but didn't get there. It is a cube (soft/cloth) with an opening on one side. Inside are shapes of all types that have various sounds such as crumple paper, squeak, etc. She would stick her whole head inside and pull out the shapes, then throw them around the room. She hasn't shown much interest in this lately, but it kept her busy for a long time a couple years ago.
