Trishul. 
The trident of Shiva, which is carried by yogis, is the royal scepter of Saiva-dharma. Its teeth symbolize desire, action and wisdom (ichchha, kriya and jnana shaktis) through which the Lord Shiva controls the laws of dharma, as well as ida, pingala and sushumna; gunas - sattva, rajas and tamas. Trident was known primarily as a weapon. It is associated with the worship of the Sun and the solar race.
In the sadhana it can be used as an item of puja (ritual of worship), or an attribute of Deity, when the mantra is read on Trishul and it is located on the altar.
Damaru. According to legends, Dhamaru is a favorite musical instrument of Lord Shiva. It is used by yogis in various rituals, particularly in those that have esoteric and mystical significance, because its parts symbolized temporary nature of human existence. Damaru consists of two drums, a hemisphere-shaped and fastened at the base, by membranes out. This means the separation of the Initial State of the male and female energy, 
top and bottom, light and darkness, its sound symbolizes the energy of creation, first sound AUM. It is used in the puja (ritual worship) as an attribute of a Deity or a separate element of worship, as well as accompaniment to bell or other instrument in the performing of ritual (arati, puja, etc.).
It is believed that morapankhi (peacock feathers) eliminate the negative influence of thin plan and clean. A large fan of peacock feathers and of yak's tail are used in the performance of pujas (ritual worship).
Malas (rosaries) for chanting (mantras reading). Their use is of particular significance and importance. Mostly used mala of rudraksha berries, which are usually worn by Shaivites around the neck, arms, or in a special bag. The number of beads is typically 108, but there are malas with a smaller number of them (eg, 54, 18). The beads are used for counting the number of delivered mantras. Grains of rudraksha are important for the yogi for various reasons. The term "rudraksha" means "the eye of Rudra (Shiva)" and may refer to the third eye of transcendent vision. It is believed that the grains of rudraksha are markings resembling eyes, and that a bunch of 108 grains represents the following one after another manifestation of Lord Shiva on Earth.
Linga or Lingam symbolizes the form and formless, because on the one hand it has a smooth surface, which means no "principle of the time", on the other hand, lingam is represented in the form of a ellipsoid, i.e. that is form. 
In general, we obtain the symbol of transcendent and immanent Reality. It is used as an object of worship of Shiva, it is believed that Shiva-lingam is a symbol of fire, absorbing all tattvas of consciousness.
We worship Shiva Gorakshanath, Siddhas of tradition and the various Deities, which due to their infinite spiritual forces may manifest to us their presence and grace through the images or murti. 
We worship these images as their temporary body in the performing of worship. Murti serves as a channel between us and the worshiping Deity.
Padukas (sandals, foot) symbolize the downward energy "Anugraha-shakti", which is manifested through the Guru. Meditation on the padukas over the space of the head in "akasha-chakra" allows you to feel this energy and to maintain a thin connection with the Guru and tradition, and also favour the comprehension of higher state. There are special mantras and puja (ritual worship) for the padukas.
Shankha can be both a shell and just a whistle "nadi", which is attribute of nathas with janeu, that they carry on the neck. Shankha is associated with the practices of detection of sound Anahata-nada (a kind of subtle vibrations of sound), which occurs in the absence of any reason, it issues from the heart and reveals the unconditioned happiness to yogi. 
The shell is used by yogis for worship, they blow in it during a ceremony (puja, arati), thus creating a sound that symbolizes Shabda Brahman.
The bell symbolizes the element of ether (sound). It is used in puja for the worship of Deities, attracting them by sound.
Patra. Vessel for water. Water is often used in various rituals (homa, puja, etc.) as an offering to Deities or as a sprinkling of items of sadhana.
Dhupa - fragrance. Scented sticks manufactured by plants and other components used for incense and offerings during the puja. Symbolizes the element of air.
Dipa - oil lamp, used for offerings in puja and arati. Symbolizes element of fire. In the Natha-tradition the rule is to perform the ritual of arati twice a day: in the morning and in the evening. In the morning adept brings dhupa to murti or image of the deity and in the evening he brings dipa, at the same time ringing a bell. This is one of the easiest ways of worship.
Mrigasana.The word "mriga" is translated as a deer (doe) or antelope. This animal is often depicted in Anahata Chakra, as it is a symbol of susceptibility. Mrigasana is the asana, which is made from the deer's fell. Only sadhus (yogis) can practice on it, who have the sufficiently high level of dedication. This asana is for gaining Moksha.
Kushasana is the asana, made of sacred grass Kusha. This asana is suitable for the practice in most cases.
Kamalasana is the asana from natural fabrics such as cotton. This asana is the one of the most frequently used in the practice of yoga.
