The most fundamental of Hindu deities, is the Trinity of Brahma, Vishnu and Shiva - popular deities include Ganesha, Krishna, Hanuman and goddesses like Lakshmi, Durga,Saraswati.
Symbols of Shiva - Dharapatra
A conical pot, the dharapatra, is always kept hanging on top of the linga, constantly dripping water from its base. The idea is to cool the 'fiery' linga.
The dripping water pot is also said to be Ganga herself, Shiva's other wife.