Please visit the Rockland branch of the Camden National Bank or the Rockland Public Library and help decorate the trees with cold weather items: hats, mittens, gloves, scarves, and socks. The items are distributed to local schools to help keep children warm. The last day to fill the trees is December 16.   The Kno-Wal-Lin Auxiliary seeks donations of handmade and store-bought hats, mittens, gloves and scarves of all sizes, which will be collected and distributed before Christmas to children and adults in need in the Midcoast area.   Trees will be set up for decorating with the donations, and the auxiliary will collect the items from the trees and distribute them to local schools and shelters as well as make the items available to any Kno-Wal-Lin staff member to take to their patients in need.