Finish the loi kratong boat by placing a small candle, flowers, three incense sticks, and some coins. Betel nuts are optional additions. The candle stick will serve as its light because the ceremony is celebrated at night. Candles and incense sticks are used to drive away bad spirits that are believed to influence the people in harming the bodies of water. The coins symbolize the urge of prosperity. Betel nuts serve as food offering to the goddess. Letting the loi kratong float freely on the river s associated with letting go of anger, grudges and other feelings.