Many opt to wear new, bright, or colourful clothes with circular patterns, such as polka dots, or display sweets and twelve round fruits as the centrepiece, in the belief that circles attract money and fortune and that candies represent a sweeter year ahead. Several customs must only be done at midnight: some throw about coins to increase wealth in the coming year, or jump to increase their height, while some follow the Spanish custom of eating twelve grapes, one for each month of the year. People also make loud noises by blowing on cardboard or plastic horns, called "torotot", banging on pots and pans, playing loud music, blowing car horns, or by igniting firecrackers, in the belief that the din scares away bad luck and evil spirits. Bamboo cannons are also fired on the night in some places.