paper plates or cardboard
First, blow up your balloon(s)*. Now, I would have used paper plates for our hitting device, except that we didn't have any. Instead, I cut large squares from a moving box we had lying around. Next, use the duct tape to affix your popsicle sticks to the paper plate / cardboard. I couldn't find our duct tape so I used scotch tape instead, which I really don't recommend. It works in a pinch but doesn't stay taped like duct tape does. And that's it. Hit those balloons, and be entertained by the fact that you just created some cheap entertainment.
*Obviously you must be careful with latex balloons around small children, as they can pose a choking hazard if popped. Therefore, you must keep a close eye on youngsters playing this game.
Photo: A Musing Mamma