Stability is essential for every flower arrangement. Holders firmly anchored to containers by modeling clay or melted paraffin are most useful, as well as a few other items which contribute to sound mechanics. Every arranger needs plastic foam, needlepoint holders, and modeling clay; also florist's sticks and florist's green or brown tape, wire hairpins, and Scotch tape; scissors, tape measure, shoe polish, and a water-color brush to remove particles of dust, borax, or sand.