We are having DS's friend birthday party next weekend, its just for 2 hours, 11-1, at our house. We are doing pizza and cupcakes for food, but I need one or two ideas of activities we can do in case just playing in our house gets them out of control. He's turning 4, there will be 4 girls and 1 boy plus some baby siblings.

What have been your (and your kids) favorite birthday party games or activities, either at parties you've hosted or parties you've attended?