Three Knob candles are used to make wishes come true. Carve a wish on each of the three knobs, and anoint each knob with oil. Burn one knob every day for three days. You may burn a knob for each wish, or a knob a day. Carve a brief word or symbol associated with your wish into each knob. Anoint the candle with the oil associated with your wish and burn your candle.