Sri Sri Jagadguru Shankaracharya Mahasamsthanam, Dakshinamanaya Sri Sharada Peetham, Sringeri

What are the various sevas one can perform ?

One can perform any type of Seva(s) to the deities as well to the Adhishthanams and Jagadguru. Details are given in the sevas page.

For performing specific Sevas, advance intimation is required as mentioned in the Seva list.

To that which is born, death is indeed certain; and to that which is dead, birth is certain. Therefore, knowing this, you ought not to grieve over (this) inevitable. Bhagavan Sri Krishna on Significance of God
Daylight and darkness, dusk and dawn, winter and springtime come and go. Time plays and life ebbs away. But the current of desire never leaves. Jagadguru Sri Adi Shankara Bhagavatpada on Mohamudgara
Once you begin to feel the presence of God, a joy unknown to you ever before will begin to be felt. The thought of his ever- living presence with you will be a great solace to you. Jagadguru Sri Chandrashekhara Bharati Mahaswamigal on Significance of God
Tendencies develop, regardless of the characteristic of the action performed. Hence, he who wishes to lead a proper life will do well to avoid evil deeds and to repeatedly perform virtuous deeds. Jagadguru Sri Abhinava Vidyatirtha Mahaswamigal on Significance of God
To err is human. Accepting one’s error and correcting oneself is a mark of nobility. Humility is the primary path to achieving nobility. Jagadguru Sri Bharati Tirtha Mahaswamigal on Significance of God's Names