SHOPPING FOR A CAUSE Everyone on your list this year will love and appreciate these one-of-a-kind finds from community-minded cottage industries. Let your fingers do the walking! This season, choose must-have gifts that keep on giving. Some favorite cottage industries, those small, smart entrepreneurs who turn out many of the most exciting products on the market, have generously agreed to donate a portion of sales from the stylish items on these pages to benefit the nonprofit of their choice. Birthday Books, $7.00 each, by Lisa Wong Jackson of Good on Paper. Give Back: 5% of proceeds to the American Cancer Society for its services.