The resurrection is a hard thing for little ones to grasp but there are plenty of ways in which we can teach them the basics of what happened and get the message across that Jesus is alive.
The chocolate, while fun for the kids (and us!), takes away from the reason why we use this time of year to remember. Of course, we should as Christians remember this every day and not just become religious at these special times of year. If our children see us worshipping and remembering what Jesus did on the cross for us every day of our lives then what a wonderful example to set them. So much better than bombarding them with eggs and a message once a year.