The men in our family have always carried handkerchiefs. Not the fancy silk models perfectly placed to impress, but the functional variety kept at the ready for work. These simple squares of fabric offer more than the obvious benefits. They can hold back your wife’s tears at a wedding, clean ice cream off a grandchild’s cheek, and polish your glasses – as well as become make-do as a sling, tourniquet, bandage, signal flag, washcloth … it’s a long list. But I found one more to add to it …