After the Best Dog on Earth events and a break for lunch, bring the little ones (10 and under) to an Earth day "Egg" hunt at the Church of the Good Shepherd. The "eggs" are actually seed packages for the children to plant and watch grow. There will be chocolate even if the eggs aren't!
Because there will be snow(most likely) be sure to dress warmly and have the children wearing boots. In case of bad weather, the hunt will be held indoors.