Making fudge is fun, and you could make a couple different kinds and give everyone a mix of pieces. There are other candies that are fairly simple and fun to make.

A platter of various cookies for each family - make one batch a week between now and then, stick 'em in the freezer - even sugar cookies look festive with colored sugar sprinkled on top - and then thaw, frost if necessary, and pile onto paper plates, wrap with colored plastic-wrap and tie with a ribbon bow.

Or buy 6 cheap frames, take the glass out and spray-paint 'em nice colors or gold or silver, and do a montage of family photos on a pretty background for each group.