Eggs are a traditional Christian symbol of rebirth, and by extension, the symbolic resurrection of Jesus Christ. If you have children, holding an Easter egg hunt is probably one of the highlights of your Easter weekend. Because eggs weren't consumed during Lent, it was a common practice in Medieval Europe to hard-boil eggs between Ash Wednesday and Easter for later consumption. Using stores of hard cooked eggs during Easter festivities, and giving them to children as tokens, may have started because people had large stores of eggs to share.
Some common Easter activities like dying eggs, assembling baskets filled with treats and telling stories about the prolific Easter bunny probably have their origins in ancient pagan festivals celebrating the rites of spring. Over time, they've been adopted and adapted to enhance the excitement of the holiday.