They Keep A Small Anvil Or Tumbler In Metals Like Copper Or Brass Or Silver To Keep The Tirtha For The Puja. It Is Called Panchapatra. Only Water Should Be Kept In It. Those Who Are Able Add Tulsi Leaves, Green Camphor, Turmeric And Some Other Divinely-Charged Substances To The Water. Those Who Cannot, Just Put Water. Many People Don'T Realize How Important The Water In Pancha