One of the best things I have found to do with children is treasure/scavenger hunts! You can do so many different things, such as pretending you're a pirate looking for buried treasure or searching for the lost tomb of an ancient Egyptian pharaoh - your imagination is the limit. When we were little, my sisters and I would take turns creating treasure hunts for each other - when it was my turn, I liked to make up little riddles that would tell them where to go next. And even though I'm (sort of) grown up now, I still enjoy treasure hunts!