What is it? – Pincushions have been a necessity for about as long as the needle and pin have been used.  Picture someone sewing by candlelight in the Middle Ages.  She puts her needle down to adjust the fabric or throw another log on the fire and when she reaches for it again . . . well, it’s nowhere to be  found.  Necessity truly is the mother of invention.  The pincushion was developed initially out of a need to organize and store pins and needles and then developed into so…