To accent the door knocker, zip-tie two crookneck gourds together, and then zip-tie them to a foam-core oval about 5 inches long. Cover ties with ribbon. Working at an angle, hot-glue sprigs of coontie palm, croton, holly fern, asparagus fern, and abelia to cover the foam core. Loop wire through one of the back ties, and hang above the door knocker. The hardy foliage will last about two weeks in cool weather and can be replaced.