First, let your cookies cool completely before packaging them for delivery. Warm cookies are harder to handle and cookies can shift in the box, creating a massive cookie blob. When you’re ready to send your cookies, pack them in a firm-sided cardboard, metal or plastic container lined with plastic wrap or foil. Insulate the sides of the container with a “wall” of crumpled waxed paper. Place waxed paper between each layer or wrap cookies in pairs, flat sides together. For extra protection, place the container in a larger box padded on all sides, with crumpled paper or packing material. Wrap the box securely and mark it “perishable” and send it on its way.