Of course, there’s joy in giving this holiday season, but when you look under the tree do you feel a little guilty, too? All that shiny ribbon, the bright lights, the wrapping paper, even the tree itself? And what about fashion? There are ways to make the holiday a little more friendly to the Earth. Bob Lilienfeld is a sustainability consultant from Broomfield. Rachel Cernansky from Denver is the senior sustainability editor at Vogue Business.