The eggs simbolyze the tomb of Jesus Christ, which opened on His Ressurection from death. This is why when the eggs are smashed, but also when the Christians meet each others they say "Hristos a Inviat! Adevarat a Inviat". The red colour of the eggs simbolyse the blood of Jesus which drained on the cross for the salvation of the world.
It 's supposed that the "Easter bunny" has his origin in the Christians faith of fertility. The rabbit, the most fertile animal, was seen as un symbol of the revive of the entire nature in this period of spring. Little children still belive that the "Easter bunny" brings them sweets and what they want.
The lamb symbolize Jesus Christ, who sacrificed for the sins of the world and died on the cross like an innocent lamb. The limb is the symbol of Jesus in the entire Christian tradition. Later on, it became an important meal for Easter.
In the night of the Resurrection, every Christian go to church. In the midnight they have to take acandle and light it when the surround the church. After that everyone comes back home with that light, named the Resurrection light. When they got home they blow out the candle. The light is kept all the year to have it for emergencies cases when it's good to light it.