As a change from running a Treasure Hunt - here is a great childrens game. Follow the links for other party games to entertain your kids:

Shadows

For this game you will need to erect a screen which can be illuminated from one side only. Turn off the other lights in the room.

Divide the players into two teams. One team will parade one at a time on the illuminated side of the screen, while the other team guess who it is.