The Vedas and Puranas tell us that Gomata (cow) is the abode of Lord Vishnu and the devatas and worshiping Gomata, especially on Ekadasi, is highly recommended.
Offer a puja with Agarbati, Camphor, Kumkum, Haldi, Banana and Jaggery on a day of your choice. You will also receive a packet of prasad at your address.