I have a favorite pair of clippers and the spring flew off. I have walked around and around the area where I was using them, but it is either lost in the grass, or - I suspect - went into the lawn cart. Now they are useless and I can't find anymore like them. *sigh* And my neighbor must think I have lost it seeing me pace up and down the same patch of grass.
My trowels on the other hand seem to walk off whenever people come in to do work on the house. Since I use my Marshalltown's from my archaeology days instead of garden trowels (mine are sharpened and I am much more experienced handling them), I am rather sad that so many have been "borrowed" over the years.