Paraphrenelia for deity worship

The conch (sankha) is a constant companion of the Lord & hence its worshipable. It embodies the qualities of power, purity, and beauty, and it also represents moksa. All tirthas in the world reside in the water within the conch. Just seeing or touching the conch destroys one’s sins. The Lord is generally bathed with water from a conch. The conch is normally placed on a special three-legged stand.
The sound of a bell is very dear to Lord. It embodies all music. If a devotee lacks instruments during kirtana, he can simply ring a bell for. For many functions of deity worship, one requires to ring the bell with a handle. The scriptures state that one who worships the Lord, attains liberation from birth and death. The bell has a handle with symbols of Garuda or cakra. The bell is generally held in the left hand while ringing. When not being used, the bell should always sit on a plate, the bell’s seat or asana. During the worship of deities, if both hands are not required to offer the items, such as clothing and ornaments, one always rings the bell. Even during bathing the deity and offering food, one should ring the bell.
Vessels (patrani)
Containers for items such as sandalwood paste, flowers and tulasi leaves may be made of various substances and have various colors and shapes (a lotus, for example). One may use vessels made of copper, gold, silver, bell-metal, stainless steel, clay, stone, wood (such as coconut shells), or brass. The Varaha Purana states that the best of all vessels are those made of copper: “[They] are the purest of the pure, the embodiment of all auspiciousness.” While vessels of gold and silver are certainly pure, a container made of copper is not only pure but also purifies the water it contains. As the Lord states in the Varaha Purana (quoted in the Hari-bhakti-vilasa), "I am more pleased by containers made of copper than by those made of gold, silver, or bell-metal." However, sour substances such as yogurt and lemon should not be kept in copper containers. The bathing tray should be copper, brass, or bell-metal. The best type of bathing tray (snana-patra or snana-vedi) has an opening on one side with a long lip, allowing the caranamrta to drain off into a separate receptacle. If the bathing tray has no such drain, you can empty the bathing tray into the caranamrta receptacle after bathing and drying the deity. Holders for incense and lamps (dhupa and dipa) can be of brass, bell-metal, silver, copper, and sometimes clay. The plate upon which food is offered, may be made of gold, silver, copper, bell-metal, earthenware, or a lotus leaf. Although sastra does not mention it, stainless steel may also be used. Do not use aluminum.