Religious Tips: Do not offer these things to Lord Shiva even by mistake, Mahadev may get angry...
Never Offer To Lord Shiva: There are crores of people who worship Lord Shiva in India. It is easy to please Lord Shiva, that's why he is called Bholenath. It is believed that Bholenath is soon pleased with his devotees and fulfills all their wishes. To please Lord Shiva, his devotees offer many things to the Shivling. In which belpatra, datura, and fig flower are included. Some things should not be offered to Lord Shiva.
Turmeric: Turmeric is included in the worship of almost all deities, but turmeric should never be included in the worship of Lord Shiva. Mahadev is believed to be a recluse and turmeric is used for cosmetics. Mahadev has renounced worldly pleasures, so turmeric is not included in his worship. According to belief, applying turmeric to Lord Shiva makes the moon weak.
Kumkum: Kumkum is never used in the worship of Lord Bholenath. Offering kumkum on Shivling is considered prohibited. Mahadev has been considered a recluse and recluse people put ashes on their foreheads. Lord Shiva also adorns his forehead with ashes. Kumkum has been considered the jewel of married women. For this reason, it is forbidden to apply Kumkum to Lord Shiva.
Conch: Neither should a conch be kept nor should it be played in the worship of Lord Shiva. Nor should Lord Shiva be anointed with a conch shell. According to mythology, Lord Shiva killed a demon named Shankh Chur. The conch is considered to be the symbol of the same demon. This demon was a devotee of Lord Vishnu, so the conch shell is blown in the worship of Lord Vishnu as well as in the worship of other gods and goddesses.
Tulsi: Tulsi is considered to be the form of Goddess Lakshmi and Goddess Lakshmi is the consort of Lord Vishnu. For this reason, offering Tulsi to Lord Shiva is prohibited. Apart from this, the description of Vrinda, the wife of a demon named Jalandhar, is found in mythology. Which is called Tulsi. Lord Vishnu had corrupted Tulsi's penance by assuming the form of Jalandhar and Lord Shiva had killed Jalandhar. Then Tulsi himself had told not to participate in the worship of Lord Shiva.
Coconut water: Offering water to Mahadev is auspicious. Mahadev becomes happy with his devotees only with a glass of water, but coconut water should not be offered to Mahadev at all. Yes, if you want, you can offer the whole coconut.