Clever Covers. These pleated lampshade slipcovers are handmade by Ariana Barron of Rockport, and of La Provence, 4 Main Street, Rockport. They adjust to fit over an existing lampshade of any shape. Two sizes, 12 inches, $26, (left) and 9 inches, $22, (right) with adjustable width. Shade at bottom is folded. Also available at http://www.shopclevercovers.comPhoto by Allegra Boverman.