Conveniently we were able to get a couple bags of mixed plastic Easter eggs so that we could divide them perfectly by each of our kids' colors. At our house each kid is color coded.
We were able to give every kid their own color (except Kevin who had to take purple since there weren't any red eggs) so that when they hunted for them they knew to only take their own color. That way we avoided any arguments and each kid got the same number of eggs. It worked out beautifully.