It is sunnah on the day of Eid to have a bath before going to the prayer.
To wear perfume.
To clip one’s fingernails.
To wear the best of one’s clothes.
To take different routes to and from the Eid prayer.
To go early to the mosque excluding the Imam.
It is sunnah to have a light snack such as dates or the like before going to the prayer.
Walking to the prayer place.
Saying takbirs of Eid is highly recommended after the sunset of the last day of Ramadan and remains until the Imam says the opening takbir of the Eid prayer. This includes saying takbir in one’s home, the market places, mosques, and the streets.
Congratulating one another on the day of Eid is rewardable, as both Ibn Hajar and Al-Bayhaqiyy stated.
It is sunnah to spend the night preceding the day of Eid in acts of worship such as praying or the like.
Prophet Muhammad (peace be upon him) used to pray Eid prayer consistently as it is sunnah mu’akkadah. The first Eid prayer that the Prophet performed was in the second year after the Hijrah (migration).