My wife recently misplaced one of her favorite rings, a pearl one she bought here in Mongolia. She spent hours looking for it and was really upset when it could not be found. Then my boy came up to me, and whispered: "Could I have a hammer?"
I asked him what he wanted it for. It turned out that he wanted to make his mother a new ring, and needed to smash one of his crystals to do it. So I gave him the hammer. I was a little worried about the sounds coming from his bedroom, but I decided not to check. Then he asked me for some glue.
A little later he gave his mother a new ring. He had taken a key ring from some toy and glued a piece of crystal to it. It was beautiful, and his mother cried. I think the memory he created is worth much more than the lost ring.