Due mostly to class subject material, I have children on the brain. When they're healthy, let them play with toys that aren't really "toys." A fond memory of mine: making spaceships at 7 or 8 years old with a cardboard box, afghan, and markers - sometimes no markers. And when they're sick? Take all their signs and symptoms together, and don't worry particularly about breaking an isolated fever. Hot temperatures make bacteria die. Simple as that.