The dharapatra is a unique hanging water pot. Shivalingas particularly have a day-and-night water trickle over them to symbolise the Ganga flowing from Shiva's matted crest.

PUJA
Ritual Worship in Hinduism
To offer worship with a concentrated mind and energised senses is to honour god. Puja includes the reception of and an invitation to god as the beloved guest in a home. To perform worship, several traditional vessels are used in Hindu homes and temples. They are made of precious metals, copper or brass. Their shapes, though basically the same all over India, vary marginally from region to region. Items used in worship are:

While performing worship the panchapatri and achamani are used for holding holy water or for water used during rituals.

Dharapatra - a hanging pot which is used to drip water continuously over the icons of various gods or over the Shivalinga. This pot has a conical bottom at the tip of which a knob or a cone or a cow's head is fitted.

Samai -a standing oil lamp with a wide flower-shaped bowl which has several grooves used for holding the long cotton wicks.

The samai is an eight or six wicked lamp made of brass or silver.

A long stem is fitted into the base of another bowl to hold any oil that may drip. The shapes of samais differ from one region to another Deeplakshmi or the lamp-goddess, is associated with prosperity.
Aarti- in a round tray made of metal, five small lamps called niranjanas are arranged and filled with ghee or oil.

The aarti is a platter of five lighted lamps used symbolically as an act of loving adoration of God

When lit, these lamps are used in a circular motion in front of the deity while devotional songs or chants are sung. Aarti is an act of veneration and love. It is often performed for children on their birthdays, for newly wedded couples or to welcome guests and family members on auspicious occasions.
Achamani - a small spoon used for bathing icons. It has a tiny bowl attached to a handle, usually shaped like a snake's hood.