قال رسول الله صلى الله عليه وسلم : من أحيا سنة من سنني، فعمل بها الناس، كان لـه مثل أجر من عمل بها، لا ينقص من أجورهم شيءٌ
Rasulullah (SAW) said: “Whoever revives a sunnah from among my sunnah, and the people practise it, he gets the same reward as those who practise it, without decreasing any of their rewards.”
[Sahih – Ibn Majah]
The Sunnahs on the day of Eid are as follows:
1 – Doing ghusl before going out to the prayer. 
2 – Eating before going out to pray on Eid al-Fitr and after the prayer on Eid al-Adha.
3 – Takbeer till prayer starts on Eid al-Fitr, and throughtout days of Tashreeq on Eid al-Adha 
4 – Offering congratulations, saying: Taqabbala Allaah minna wa minkum (May Allaah accept (good deeds) from us and from you” 
5 – Adorning oneself with perfume and best clothings, and stay away from silk. As for women, cover the adornments from non-mahram and no perfumes.
6 – Going to the prayer by one route and returning by another.
 Ibn Umar (RA) used to have a complete bath before going to the place of prayer. [Sahih – al-Muwatta]
 Prophet (SAW) used to eat some odd number of dates before going to prayer. [Sahih al-Bukhari]
 Ibn Shihad az-Zuhri (RA) used to say: “The people used to say Takbir from the time they came out of their houses until the imam came in (for prayer).” [See Irwa al-Ghaleel]
 When the companions met one another on Eid, they say: Taqabbalallahu minna wa minkum. [See Fathul-Bari (2/446) – Isnad is good according to Ibn Hajr]
 The prophet had a cloak which he wore on the two Eids and on Fridays. [Sahih – Ibn Khuzaimah]
 The prophet (SAW) used to vary his route. [Sahih al-Bukhari]