A.
What about some sponges in the shape of eggs that they could dip in paint, and create a picture. At that age, any "craft" you do will require major adult help, so hopefully you plan on having parents around. Or, could you have some real bunnies or chicks and take pictures of the kiddos, decorated with an easter picture frame that they helped make? Just a few thoughts! Good luck, it sounds like a bit of chaos and a bit of fun! ~A.~